Kim slouched comfortably in the armchair in the corner of Helen's bedroom and started chatting merrily. She seemed far more relaxed than Helen remembered her ever seeing her.

Helen was pleased that the buxom Japanese teenager wore the same clingy and exceptionally skimpy sailor's suit as she'd worn the previous week - a far cry from the loose, baggy clothes she usually wore. This outfit suited her, showing off her slim figure and enormous boobs.

"I have to tell you about yesterday," Kim said enthusiastically. "It was so much fun."

So Helen made herself comfortable, curled up on her bed, as her best friend gushed about her latest sexual escapade.

"You know that sex game and the toys you sent me?" Kim said. "We played yesterday, and I did so many new things." She leered. "Filthy things I'd never imagined doing. I loved it."

Helen was astonished. She had never expected her cripplingly shy friend to actually play, let alone so soon.

"Who's this 'we'? Who on earth did you play with?" Helen asked. "I hope you found a suitable stallion."

"Your dad, of course!" Kim said. "You know I fucked him last weekend after the 80s night at the pub."

Helen was horrified. She'd intentionally 'forgotten' her father had screwed Kim, burying the incident beneath her own embarrassing secret, but now the details of that awful weekend flooded back.

She had almost been in tears when she found out about Kim's first encounter with her father and had made them swear separately never to fuck each other again.

"Yeah, I remember. But Dad's so old; how could you do it again?" Helen asked. "Especially when I asked you—and him—not to."

"Of course, we did it again." Kim sounded peeved. "You know I've fancied your dad since forever. Now that I'm finally having sex with him, I'm going to make the most of it."

Kim had always fancied her dad? Helen hadn't picked up the slightest hint and still didn't believe Kim could fancy anyone as old and decrepit.

"You never said a word! But he's ancient; surely you can't fancy an old man?"

Kim giggled. "He's not that old. He's at least ten years younger than Ken, and I know Ken took your virginity. "

Helen blushed. And she'd fucked him again since, she thought, guiltily. But only once, and it was her birthday party, she rationalised.

"That was different! Ken is fit and muscular and has a big cock."

Kim laughed heartily this time, almost uncontrollably. She held two fingers in front of her, about nine inches apart.

"So is your Dad. And he's gorgeous, ever so handsome; there's not an ounce of fat on him. And he has an enormous dick. Far bigger than Ken," Kim said.

Helen conceded that her father might be good-looking but not the rest. She laughed. "He can't possibly be that big."

"Trust me, I've made love to them both," Kim replied. "I'm glad you persuaded me to let Ken deflower me; it gave me the confidence to have sex with your Dad."

After Helen's birthday party, to her great disappointment, Ken refused to fuck her again. What with exams and the terror of finding a partner, she'd not had sex since - until the previous weekend when her sexual frustration had boiled over. Bitter that he wouldn't fuck her, Helen had done her damnest to prevent a very willing Ken from taking her friend's virginity!

Kim laughed. "Did you know your dad watched Ken fucking me? That was when I knew I had a chance. He's screwed me loads since, and it felt like he'd split me open every time."

Helen shook her head, confused by the idea her dad was a peeping tom. She suspected he'd taken advantage of several of her friends, so she decided he must be a predator, forcing himself on vulnerable young girls.

"So, did you play the game, or did he just force himself on you?" she asked after a long pause.

A look of annoyance passed across Kim's face. "We played; I dragged him into it, dammit." She sighed before continuing. "On the first spin of the wheel, I got 'Pussy Eating'."

Kim giggled. "Your dad didn't want a mouthful of pubes, so he used the razor to trim me. I love my hairy bush, so I only let him trim around my lips."

Kim stared into the middle distance with a slight smile on her face. "It feels so intimate letting a man do that to your privates. Did you know he sticks his tongue between his teeth when concentrating?"

Helen knew. I was one of her father's many quirks. They all irritated her, but Kim clearly thought this endearing.

Kim lifted her skirt and pulled down her white panties. "See. Doesn't it look great?"

Kim slouched back in the armchair and spread her legs wide, showing Helen the still wild triangle of hair above her smooth shaved slit.

Helen nodded, unable to picture her dad doing anything as intimate as that. Her own pussy was a blond, untouched jungle; she couldn't imagine letting a man shave it. But Kim looked fabulous with her fleshy entrance exposed.

Helen's hand reached down and rubbed her own hairy slit. "Yes, it looks very sexy."

Kim smiled. "I didn't like it at first, but after your dad ate my pussy and fingered me, I loved it. My pussy feels ever so sensitive now."

Helen remembered vividly Ken eating her pussy before he took her virginity. "It's wonderful, isn't it?"

Kim fingered her still-exposed slit, one finger reaching inside. "Oh yes! Your dad is fabulous at eating pussy, and I came really hard."

An image of her father with his head between Kim's legs flashed through her mind. Helen shook her head, trying to dismiss the lurid thought. She glanced down at her friend's pussy; the girl was moist! Helen shook her head and tried to forget that her dad's tongue had lapped at Kim's newly shaved slit only yesterday.

"What next?" Helen asked, not wanting to show her bestie that her story unsettled her. She didn't acknowledge the prurient curiosity driving her to learn more.

"Next spin, we got 'Add a Girl'. Luckily, my friend Aiko was over for the weekend, so I roped her in."

Kim shook her head ruefully. "It took me longer to work up the courage to ask her if she wanted to play a sex game than it took to persuade her. Aiko was up for it the moment I mentioned your dad. I was already naked, so she stripped off before we went back down to the pool."

Helen was in disbelief. Her father couldn't be this attractive to women, could he?

Kim paused for a moment. "That's when it got exciting. We span the wheel, and it stopped on 'Butt Plug'," she said. "I didn't want to do it at first because the idea of anything in my bottom was too revolting, but Aiko was really keen and persuaded me to try."

She looked thoughtful. "I'm glad you told me about last weekend. Otherwise, I'd never have dared try. And I'm so glad I did because, in the end, your dad destroyed my arse!" She grinned. "It was fantastic. But we'll get to that later.

Helen had been fucked in the arse just that once and had hated it. The humiliation of being painfully fucked in the arse in public, screaming, and being cheered on by drunken blokes, made her blush scarlet.

Her humiliation was completed when the two men who fucked her discarded her like a used napkin, naked and covered in cum, the moment they were done, disappearing and laughing about her with their audience.

"Didn't it hurt a lot?" Helen asked. "I know I told you about that rugby player last week, but I didn't tell you that I hated it. It was awful; my arse burned so much I couldn't take it."

"The bloke can't have known what he was doing!" Kim looked quizzical for an instant, then she shook her head. "As for the butt plug, it burned a little, but that didn't last long. Aiko and I loved being plugged."

Kim grinned. "Aiko tried a tail plug, which looked ever so sexy sticking out of her arse."

Helen hated that her shy friend had outdone her. Anal had been excruciating, but now Kim was all grins and apparently loving it. Kim's nipples were like bullets through her skimpy top, and her pussy was oozing, so Helen knew she was sincere.

"I can't believe you like it. It hurt terribly when I tried." Helen paused.

Kim looked accusingly at her friend. "It's your fault that I tried. I know you wrote all the labels on the wheel; it's your handwriting." She glared at Helen. "Why did you do that when it hurt you so much?"

Helen never imagined her friend would play with it. "I made it for a joke, something we could giggle about." She looked contrite. "I'm glad you enjoyed it. It would have been awful if it hurt you as badly as me."

Kim laughed. "Don't worry about it. I did enjoy it. Very much!"

Curiosity nagged at Helen. Why it hadn't hurt Kim? "What exactly did you do?"

Kim inhaled and yawned theatrically. The girl has a massive chest! Helen was envious, though she knew her own bosom was impressive.

"Your dad insisted I went first. I got into the doggy position, and then he lubed my arse."

Kim grinned. "The oil was so cold, I must have jumped a mile. I jumped again when he stuck two fingers in my bottom to stretch me for the plug. It was kinda nice when they played inside me."

Another appalling vision of her father flashed through her mind. She wasn't sure which horrified her more: imagining fingers in Kim's arse or that they were her father's.

Her horror must have been apparent because Kim stopped for a moment.

Kim shook her head. "I know it sounds awful, and it did feel weird and a bit painful at first, but your dad was really gentle and patient. Once I got used to it, I loved it."

Kim giggled. "I know Aiko was watching because she kept oo-ing and ah-ing, and once or twice, she gasped. Anyway, once his fingers had stretched me, your dad slowly rammed a plug into my bum."

Helen had blushed furiously when the delivery driver dropped off the box of toys, grinning. She had rushed to her room and examined the assortment of dildos and plugs. Her curiosity won out. "Which one was it?"

"The blue glass one that tapers and has bulges? I loved it when your father pulled the bulges in and out of my ... err ... back entrance. I can't describe how it felt, but it was incredible."

Helen nodded. That one was huge! She tried to picture how wide it was and couldn't imagine it fitting at all. "He shoved that thing all the way into you?"

"Oh yes! And once it was in, it stayed in." Kim grinned lewdly. "Until his dick replaced it, of course. I almost forgot it was there after a while."

"After that, I watched him put the tail into Aiko's arse. He stuck his fingers in her arse first to work in the lube. Just one to begin with, but eventually three. Her bum gaped wide open when he pulled them out. It looked appalling."

Helen tried to dismiss the image of her father with his fingers in some girl's arse. As for Kim, this was a revelation. Her cripplingly shy friend had now surpassed her and obviously relished the experience.

"You've got to be joking! He'd never do something like that," she said, not even sounding convincing to herself.

Kim shook her head. "His fingers were in our bums for ages, as far as he could push them. You have to feel it for yourself. Once you're stretched a little, it feels weird but great."

Helen was still in denial. Her father was ... well, her father. He could never do that!

"Anyway, it took him ages to work the plug into Aiko. The butt plug was ever so fat, bigger than the one in my bottom." Kim paused, grinning. "But not as fat as your dad's monstrous dick."

If her father had a dong like that, he'd be hung like a porn star. "Dad's no pornstar; he can't possibly have a dick that big."

Kim laughed. Two fingers were embedded in her pussy now. "He should be, and he really does. My fingers don't wrap around it. Not even close, and when I suck him, his dick reaches halfway down my throat!"

Helen was suddenly envious of her previously timid friend. Ken had asked her to see how much she could take before he deflowered her, but she gagged with half his dick still sticking out. Helen hadn't even attempted to deep-throat the two rugby players who had fucked her, one after the other, the previous weekend.

"Once Aiko's tail was in, it looked ever so sexy. Next time, I've got to try that one. And I want photos." Kim looked mischievously at Helen. "You'll take them, won't you?"

Again, Kim surprised her. Kim never liked having her photo taken. And now she wanted frankly pornographic ones. Helen wasn't sure she liked this newly adventurous Kim.

"I won't take photos of you with my bloody father," Helen said indignantly.

Kim sniggered. "Of course not. We'll have to find someone else."

Helen loved the idea of watching her voluptuous friend being fucked. She grinned. "Never mind that now! Keep talking, girl."

"After that, we cheated and didn't spin the wheel," Kim continued. "Aiko was desperate to know what it felt like to be fucked with a plug in her bottom, so we made your dad screw us both with the toys in our bums."

This was totally unlike Kim, who was always submissive. "Did Aiko force you to?" Helen asked.

Kim shook her head. "Hell, no. The plug stretched my arse ever so wide, and I just had to know what it would feel like with a dick inside me as well."

Helen tried to imagine the sensations but failed. Clearly, there was fun to be had, but she couldn't see it. Kim's dripping pussy indicated that she could.

"Your dad started off with Aiko doggy-style because I'd promised her I'd let him fuck her first." Kim laughed. "She looked fabulous with the tail flipped up over her back and his fat dick in her shaved pussy."  

Helen had watched enough porn to picture the scene. She just couldn't place her father into it. Instead, Helen imagined some well-hung actor shafting Aiko. The idea was arousing, so she tried but failed to imagine herself doing it.

She shook her head, still imagining Aiko being pounded. "Was it what she expected, and did she enjoy it?"

Kim shook her head, grinning. "Oh, he didn't finish her off then. We were both in doggy, side-by-side. Your dad was slowly shafting Aiko, but his fingers kept stroking my bum and pressing at the plug. Aiko had just started muttering and panting when, suddenly, your dad pulled out of her and said he wanted to pound me within an inch of my life. It was music to my ears, but Aiko was furious."

Helen stared at her friend in amazement. The cripplingly shy girl she knew was gone completely. In her place was this confident woman, enthusiastically describing the lewdest acts imaginable.

Kim laughed. "Aiko told him to punish me, so his dick just slammed straight into me. I'm sure I screamed, feeling like I was about to split open. He just hammered into me until I came, but it was bloody marvellous."

It sounded inconsiderate, typical of what Helen had imagined. "I knew it; Dad was just exploiting you, thinking only of his own enjoyment."

Kim chuckled lewdly. "It wasn't at all like that. He made sure we both came. Repeatedly."

Helen watched as Kim visibly counted, ticking numbers off on her fingers. "I came four times, and Aiko came twice, but your dad only came twice. Not what I'd call selfish."

Helen knew she was defeated. "Yeah, I guess. I still don't like the idea of him fucking you. It's indecent and inappropriate for a man his age to be fucking teenagers."

"It is indecent, but so is all sex," Kim giggled. "And you loved being fucked by Ken. That age gap is much bigger."

Conflicting thoughts raced through Helen's brain. Ken was much older than her father, but somehow, being fucked by him was fine; she knew it was hypocritical to criticise Kim over her father's age.

"Okay, okay, point taken," Helen conceded with a sigh, watching her friend gently fingering herself. "I can tell you liked it."

Kim's obvious arousal at just the memory said that, whatever her father's motive, her best friend had thoroughly enjoyed it.

"Liked? I loved it!" Kim said. "Aiko soon forgot her disappointment because she touched me up the whole time your dad was pounding away at me. The more I think about it, the better it was!"

Kim's fingers briefly emerged, wet, from her pussy before plunging back in. "When his monster slammed into my pussy, I felt like I was going to split open. And that was before he started shafting me. When he did, I felt his mammoth dick rippling past the bulges of the plug. It was so stimulating, I was on the verge instantly!"

Kim sighed contentedly. "He destroyed my pussy, thrusting so hard I could hear the slap when his pubes hit my arse. All I could feel was his monster repeatedly splitting me open, gliding past the plug that filled my bum. With Aiko stroking my clit, it was incredible."

Helen was envious of Kim's evident enjoyment of being double-penetrated, but the pain of her own anal failure quickly quenched her jealousy.

"I came ever so quickly." Kim smiled. "I thrashed and jerked around, impaled on your dad's monster so hard that he had to hold me tight. But his iron shaft still kept poking me, even during that. He kept mumbling something like 'not yet, not yet'. How I wasn't filled with your dad's hot spunk right then, I don't know!"

Helen had almost come to terms with the idea of her father fucking, but the thought of him ejaculating shocked her once more. It didn't seem right to picture his dick spurting with cum. She opened her mouth to object but realised she'd sound silly.

Kim stopped speaking and sat there with her eyes half-closed, fingering herself. Helen grinned.

"Yes, I know you loved it, but can you play with yourself later?" she said, "I want to know what happened next? I still don't approve, but you must tell me how he reamed your arse."

Kim's eyes snapped open. "Sorry, I was just thinking about how good your dad made me feel." Her eyes sparkled. "I must get double-penetrated properly by two dicks sometime."

She paused for a moment. "Where was I? Oh yes, your dad switched back to Aiko after he'd made me come."

"This time, he fucked her bent over, clutching her ankles. It looked so erotic, just like a porn scene. Aiko naked, wearing high-heels, a ponytail hanging from her arse, and your dad's fat cock pounding her pussy."

Another change. Until a few weeks ago, Helen knew Kim had never watched porn.

Kim paused and looked at Helen. "Did you know Aiko talks all the time when she's being fucked? Until she comes, then it's just incoherent shrieks and moans. Boy, did she make a racket when he pounded her pussy."

Helen was embarrassed that she was more comfortable when Kim talked about her dad fucking Aiko. She hardly knew the girl, but that didn't make his actions more excusable. He was still just a dirty pervert exploiting a teenager.

Kim looked affronted. "He's not a pervert. We wanted him to fuck us. If anything, Aiko egged him on."

Helen realised she must have spoken her thoughts aloud. "Sorry," she mumbled. "Keep going. Dad was screwing Aiko."

Kim grinned. "Aiko's a bit of a gusher. When he made her come, her pussy juices oozed out past his dick and ran down her legs. So much, there was a puddle!"

"God, I can't imagine doing that," Helen said. "I didn't know women could really do that; I thought it was just a fanciful porn trope."

"I watched it happen, Aiko really squirted. It dripped off your dad's balls as well. She was screaming in ecstasy. If you couldn't see her face, you'd think she was being tortured."

"I scream when I come," Helen admitted. "I can't help myself."

Kim looked her up and down. "I want to watch you being fucked," she said. "I bet you look stunning impaled on a dick, with your tits thrust forward."

Helen felt her panties dampen. The idea of Kim watching her excited her. "Oh yes, we must get fucked together."

Kim leered. "You find the men, and it's a date."

Helen laughed. "I'm sure the rugby boys will be up for it; I'll ask." She paused. "But for heaven's sake, keep going. You still haven't told me how you took it up the bum!"

No sooner had Helen spoken than she regretted her words. The rugby boys had humiliated her utterly.

"Now, who's the pervert," Kim joked. "Aiko's climax drove your dad over the edge. I wanted him to unload into my mouth, but he came the instant he pulled out of Aiko's pussy. God, he sprayed so much cum all over me. It was like a hose pipe. It was in my hair, all over my face, and running down my chest."

Kim laughed. "I bet I looked a right mess!"

Her pretty friend had a sumptuous body. "More like a pornstar," Helen said.

"I wish," Kim sighed. "I don't flatter myself that I'm good-looking; men only look at me for my boobs."

Helen snorted. "You're not good-looking; you're beautiful. But your mammoth chest is eye-catching!"

"We can talk about that later," Kim said, dismissing the compliment with the briefest head shake. "Right now, I'd better finish my story."

"After your dad nearly drowned me in spunk, Aiko upped the ante again and asked your dad to fuck us both in the arse. I was terrified and insisted I'd only do it if Aiko enjoyed it."

That sounded more like the Kim, Helen remembered. Scared and always meekly following. This new girl was scarily bold, having tried and enjoyed things Helen had scarcely contemplated.

"Aiko grabbed her ankles again, and he pulled out the tail. I swear it made a popping noise when it came out. Her arse was wide open for a few seconds. It didn't properly close up, either. You could stick a pencil in the hole."

Helen screwed her face up in disgust. Bum stuff was suffused with so many gruesome, unsexy images. But apparently, it could be fun, and she knew she was warming to the idea of trying again.

"After he pulled the tail out of her arse, I helped your dad lube her up." Kim giggled. "I was very adventurous and stuck a finger in her bum to work in some oil."

Helen grimaced, wondering what it felt like. She smiled. Both the fingering and being fingered.

"Without the tail, it looked awful when he pushed his dick into her oily sphincter. Once his dick was fully inside, he started reaming her arse, and Aiko loved it. She was yelling and screaming in delight."

"Part way through, your dad pulled his enormous dick out of her arse, which was gaping horribly. It was all slimy with lube, so without thinking, I took it into my mouth and sucked it clean."

Helen couldn't help herself. "Yuck," she exclaimed, "that must have tasted revolting."

A giggle and a shake of the head followed. "Cherries."

The scary, adventurous girl was back.

"Then he slammed his weapon hard into Aiko's arse and really punished her. Aiko egged him on, telling him to pound her harder. I couldn't stop watching his glistening dick slamming into her backside, knowing he was about to do the same to me. By then, I could hardly wait."

Her friend's enthusiasm was infectious, and Helen knew she had to try again and endure another dick invading her arse. This time, hopefully, enjoyably.

Kim laughed. "Aiko was screaming for more the whole time until she came. Then she really gushed. Juices just streamed from her pussy and all over your dad's legs."

Helen tried to put herself in Kim's place, watching her friend being fucked in the arse for the first time, knowing she was next.

"Weren't you still scared, knowing you were next?" Helen asked.

Kim snorted. "No, I could hardly wait. When your dad's massive erection pulled out of Aiko's bottom, I sucked his dick clean. Then, I bent over and grabbed my ankles, ready for his invasion."

Kim obviously thought nothing of it, but the idea of sucking a dick straight from someone's arse was vile. She was more than just adventurous; filthy was a better word. But, deep down, Helen knew she'd probably do the same, given the opportunity.

"I've only got short legs and was barefoot, so my bum was too low." Kim giggled, looking straight into Helen's eyes. "He said he couldn't do it half-crouched. So he started by fucking my bum doggy-style."

Helen had almost forgotten it was her dad they were talking about. She knew she could never look at him again without picturing him slamming his dick into Kim's arse. God, I hope I don't blush when I see him!

"My arse was so tight, it took him ages to get balls-deep into me. My hole still burned a little, so Aiko tongued me while your dad slowly loosened up my backside with his dick. I could feel his fat dick slowly gliding in and out, stretching me wide open. It felt so forbidden but fantastic that I came before he properly got going."

Helen listened attentively, hoping to catch hints for when she tried again. She already knew her basic mistake. Preparation. She badly wanted to again.

Kim laughed. "Stop thinking about a dick in your own back passage, and pay attention!"

Helen shook her head. "Did he just keep going in doggy?"

"No. I didn't want to be just passively reamed like your father had done with Aiko. I wanted to be in control, so I sat astride him and impaled my backside on his enormous dick." Kim paused. "It really is impressive. As hard as rock, fat and at least eight inches."

"I rode him for a while. Sitting down on him, so my weight forced him deep inside me. It was lovely making his weapon glide in and out of my bottom, and cowgirl is my favourite because I can watch your dad's face as he's pounding me. He can never take his eyes off my boobs."

Helen was once more envious of her friend's mammoth and perfect chest. She looked at Kim; sure enough, her nipples strained at the thin fabric of her halter top, and a droplet glistened at the base of her exposed slit.

Kim sighed. "But that gentle ride wasn't doing it for me, so I got him to properly pound my arse. He pulled me down against him." Kim looked wistful. "I loved being pressed against his hard chest; it felt so intimate with his face so close and him staring into my eyes as he slammed that monster up into me until we came together." Another giggle. "He really filled my bum with cum. It ran down my legs when he finally pulled out."

Helen reluctantly decided her father had to be a desirable sex object, though she still couldn't see it.

Kim reached between her legs, feeling for her arsehole, wincing when she found it. "Aiko told me my arse was gaping, wide open, but it just tingled at the time. My arse is well sore today, but it was worth it."

"Aiko and I talked about it after your dad left." Kim smiled. "I know the only other guy who's made love to me was Ken, but Aiko has more experience, and your dad is the best fuck either of us has had. He really is a sex god."

The evidence was overwhelming that Kim indeed found her father attractive and sexually desirable. And though she was delighted Kim had come out of her shell, she was irritated that her best friend was now scarily more sexually adventurous. She swore to herself that she'd have to catch up. And soon.

Kim looked Helen up and down. Her gaze settled on Helen's chest, and she knew her hard nipples were a giveaway.

"You need to get fucked in the arse again. I know you want to, and you'll love it if it's done properly."

Helen had reached the same conclusion minutes ago. She fingered her own orifice, anticipating an enjoyable reaming next time. "Yes, I'm going to talk to those rugby blokes. I'm sure they'll be up for both of us."

Helen vowed to herself she'd find some other men. Seeing those rugby blokes again was too humiliating to contemplate.

Kim grinned. "I can't wait. They can double-team me as well."

That filthy, scary girl was back. Next time, Helen expected to meekly follow her friend's lead. She had a lot of catching up to do.