Holly enthusiastically flung open the door of her tiny downtown loft.

“Thank God you’re here! The young woman exclaimed. “Please, come in!”

“No worries, it was the least I could do,” Clark responded, smiling warmly at his wife’s little sister as he stepped into her minuscule apartment. “It’s your first place on your own. We’ve all been there. As soon as Ellen told me that you hadn’t even unpacked your Christmas decorations, I knew you were in trouble.”

“Yeah, it’s kinda my holiday,” Holly chuckled, pointing to the Santa hat atop her head. “By the way, please thank her for loaning you to me for the evening.”

“Will do. She wanted to come help, too, but we’re just starting to get into a routine after bringing the twins home from the hospital, and I think she’s still adjusting to newborns herself. So, where do you want to begin?”

“Honestly, I just want to skip to the fun part and put up all my Christmas stuff. Can we start there, and if there’s time afterwards, we can unpack a few regular boxes?”

Clark nodded, and soon the two were busily pulling the containers marked “Christmas things” out of a pile of moving boxes. Just then, Holly’s cell phone started ringing. Holly stepped into her kitchen and fished out her phone.

“Hello?”

“Hi, Holly,” came an unfamiliar voice. “Who’s that stud you just let into your new apartment?”

“What? Who is this?” Holly asked in a confused tone.

“You don’t remember me? Good. That means the suggestions are working just as they should. Zulu, Zulu, Bravo, one.”

The hypnotic trigger took effect as soon as the words came over the line, causing Holly’s expression to go blank.

“Ready for instructions,” she droned in a monotonous voice.

"Your command is Sierra, Lima, Uniform, Tango." Merry Christmas.”

“Understood,” Holly replied. The line went dead, and the girl blinked a couple of times, returning the phone to her pocket afterward. Looking around, she spotted Clark through the kitchen’s doorway, oblivious to her stare as he pulled her Christmas tree out of its box. A naughty grin spread across her lips, and she strutted out to the living room.

“Who was that?” Clark asked as he set up the tree with his back to Holly.

“Oh, just a friend,” she cooed, licking her lips as she stepped up behind her brother-in-law. “Hey Clark, can I show you something?”

"Yeah," he responded, starting to pivot. “What’s—oh my God.”

Clark’s jaw dropped and his eyes went wide as he took in the sight before him. There was Holly, grinning hungrily as she held up her sweater, flashing him with her tits on full display.

“Like what’cha see, stud?” Holly purred. “I’ve got even more to show off, if you’d like.”

“Holly! What the fuck!” Clark exclaimed, stumbling slightly as he backed into the tree. “What’s gotten into you?”

“Hopefully you’ll spend a little time getting into me,” she said with a wink. “I’m just dying to see if that big muscular cock of yours feels as good inside me as Ellen says it does in her. What do you say? Do you want to take me to my bedroom and fuck my brains out, or should I just bend over here instead? Your choice.”

Clark swallowed hard. He’d fantasized about Holly often in the past. He’d even admitted it to Ellen once when he was drunk. But he could never act on it. This was Holly, his wife’s nineteen-year-old sister. He couldn’t do that. Not to Ellen.

“Come on,” Holly added, pulling her top up and over her head. “You know you want me. Ellen told me about your little crush. I know you’ve jacked off thinking about these tits,” she added, grabbing her breasts for emphasis. “They can be all yours, along with this.”

Clark watched in shock as Holly unbuttoned her jeans, sliding them down along with her panties in one swift motion. Next, she stepped forward, letting her naked body rub against Clark’s as her hand made its way to the growing bulge in his pants.

She leaned in, giving Clark a little kiss on his ear before whispering. “See?” Holly cooed softly, rubbing his shaft through his pants. “You do want me. Now forget about my stupid sister and take me.”

Clark tried to resist, but her words proved to be too much. Overcome with lust, he grabbed Holly by the shoulders, pulling her lips to his in a deep, passionate kiss. Holly moaned as his hands roamed all over her young, sensual body, and she began tugging at his clothes. A moment later, his clothes joined hers on the floor as Clark pushed her down onto the sofa and began eating her out.

“Oh, fuck!” Holly groaned as her brother-in-law lapped at her pussy. “Fuck, yes! You really are good at this!”

Clark grabbed at her tits with his hands as his tongue expertly flicked at her clit, using every last trick he learned with his wife. Before long, Holly was screaming in ecstasy as a blistering orgasm racked her body.

Before she could finish coming down from her bliss, Clark repositioned, lining himself up at the girl’s entrance. Slowly, he pushed forward, and Holly let out a sigh as she watched inch after inch of his big, girthy cock slip inside her.

“Mhhh, yeah,” Holly moaned as Clark started pumping into her harder and faster. “Yes, Clark! Oh God, fill me up! Fuck me hard, then cum in my pussy! Give me a set of twins, just like you did for my sister! Fuck me!" Clark grunted, slamming into the girl passionately.

Meanwhile, back at Clark’s home, Ellen smiled as she put away her phone. After birthing the twins, she might not be able to give Clark the pleasure he deserved for a while, but thanks to years of hypnotic programming, she just knew that Holly would make his Christmas extra merry.