Having discovered a previously unrevealed mutual attraction, fifty-nine-year-old Henry Golding and his wife's sister, sixty-four-year-old Helen Watts, were determined to continue their affair.
The attraction had come to light after Henry ejaculated whilst receiving a hairbrush spanking over Helen's knee at the request of Henry's wife Judith.
Both Henry and Helen were hugely turned on by the situation and when Helen gave Henry another spanking at her sister's request a few days later, the punishment was administered in two parts with Henry and Helen fucking in between.
Being downstairs during both episodes, Judith had no idea exactly what her husband and her sister had been doing, although she could clearly hear the sounds of application of hairbrush to buttock.
Two days after the second spanking (and first fucking), Helen mentioned loudly whilst at her sister's house that her own husband Cyril was away playing bowls that afternoon and Helen's look towards Henry, without Judith seeing, was a clear invitation for him to visit her house.
Just to make sure that there was no misunderstanding, Helen said after kissing her sister on the cheek, "See you soon Henry,"
"Yes, see you soon," he replied as their eyes met.
About five minutes later, Henry announced to his wife, "I going for a walk for a couple of hours," and as that was not an unusual thing at a weekend Judith thought nothing of it.
Henry arrived at Helen's house and she was delighted to see him, "What did you tell Judith?" she asked.
"Just said I was going for a walk," as the mature couple kissed.
"Hmmm, well, I think you will be having a ride," giggled Helen.
"Fuck, you are so sexy, Helen, I have always fancied you," said the sexually aroused Henry.
"If only we had known each other's feelings, we could have been fucking for years," replied Helen as they kissed again.
Helen had her hand inside Henry's trousers and underpants and started to massage his cock, a cock that was a fair bit bigger than Helen's husband Cyril's.
Henry had his hands on Helen's large breasts as his cock reached full erection in his sister-in-law's hand.
"Let's get upstairs," said Helen as she let go of her new lover's penis and turned away from him, feeling his hand starting to stroke her big backside.
They giggled their way up the stairs before kissing again as they reached the top and then stumbled into the main bedroom.
Clothing was removed until Helen was left in just her knickers and Henry was naked, although his trousers and pants were at his ankles.
Henry stepped out of them and then approached Helen and had his hands on her arse inside her knickers as she slowly wanked his cock.
She turned her back on him and he dragged her knickers down for her to step out of as he kissed each of her arse cheeks in turn.
Henry stood up and his erect cock brushed Helen's arse as he kissed the back of her neck and his hands fondled her tits.
She cooed and purred as the dampness in her cunt got wetter and wetter.
They were again facing and she stroked his cock as he pawed her arse before they found themselves on the bed and she was feeding his prick into her begging cunt.
Their only previous carnal meeting had been rushed by necessity as it was during an interlude in Henry's spanking and with his wife downstairs, this time, they were able to make love at comparative leisure.
Henry was actually quite good at making love, although he very rarely did it these days as his and Janet's sex life was almost nonexistent but Helen was feeling the quality of his abilities.
As his rod slid in and out of her cunt she felt the approach of what promised to be a huge orgasm.
As it arrived, she almost screamed, "Shit, oh fuck, oh fucking hell, yesssss," as her whole body seemed to shake.
This made Henry feel good about himself and he determined to try to refrain from letting his spunk go until he had made her cum again.
The two of them continued their humping and Helen did indeed cum for a second time until Henry got the warning signs that he was about to ejaculate and ejaculate he did as he spurted into his sister-in-law's cunt.
After they had both calmed a bit, Helen said, "God, Henry, I don't know when I last came that hard; you are a fucking good lover."
"Thanks Helen, you have a body that just needs to be fucked."
They kissed and cuddled in their nakedness for a while before they decided that they had not better push their luck and Henry had better head home although he gave his penis and pubic hairs a good wash before getting dressed.
They knew that Judith would be out playing bingo in two nights' time, so it was decided that they would get together in Henry's house then.
Judith duly set off for her friend Christine's house from which a further friend, Evelyn, would pick them up in her car.
With Judith out, Helen arrived and soon she and Henry were naked in the main bedroom.
This time Henry was on his back as Helen rode his rock hard cock and the sounds that they were making during their fucking masked the sound of the front door opening downstairs.
As it happened, Evelyn had had car problems, so with no lift available, Christine and Judith's bingo night was off, so after a cup of tea and a bit of a chat, Judith had returned home.
As she stood at the bottom of the stairs, the sounds coming from upstairs were almost unmistakable, so she made her way upstairs in a state of almost shock.
Before she reached the top of the stairs, a female voice yelled, "Oh fuck, oh yes, oh yes," and a male groaned.
As Helen leaned forward to give her lover a post-orgasm kiss, Judith pushed the part open door fully open.
The view that she got was of a large female backside and a penis embedded in a cunt.
Judith let out a stifled scream and the owner of the female backside turned to reveal that it belonged to her sister, "Shit! Judith!" exclaimed Helen. The owner of the penis was revealed to be Henry, who mumbled something incoherent.
