It was a nice sunny day and seventeen year old Ian Patterson was sunbathing in his families back garden as was his twenty year old sister Sharon.
Sharon was an attractive girl, slightly overweight but not fat and most of her excess weight was in her hips and buttocks.
The siblings were on sunbeds and Sharon had her head turned away from Ian as his eyes drifted down her bikini clad body to her buttocks. He focused on the twin mounds which were accentuated by the bikini bottoms and he could feel his prick stiffen.
Whilst Ian had his eyes there he did not notice that his sister had turned her head towards him but on turning Sharon saw where his
eyes were aimed. “Hey, are you looking at my arse?” she said in a slightly miffed way.
“No, no of course not,” replied her flustered brother.
“You are…and you have got a fucking hardon,” she said noticing the bulge in his swimming trunks.
“No I am not and I have not,” said the embarrassed Ian as he got up from his sunbed and scurried indoors.
The siblings did not have much more contact during the day but that night Ian wanked thinking of his sisters backside and Sharon had her fingers in her cunt as she thought of the bulge in her brothers trunks.
Ian had no intention of furthering the subject but Sharon had other ideas. She was wearing a particularly tight pair of trousers which she knew emphasised the roundness of her buttocks and she deliberately bent over when she heard Ian approaching.He could not prevent his eyes going to those cheeks which from his angle he could see both curves.
“Ha, looking at my arse again!” she said.
“No Sharon, I wasn’t.”
“I don’t mind you looking at my arse, in fact I quite like it,” she said smiling as she staightened up.
“You do?”
“Right, so you do admit it then.”
Ian blushed but did not answer.
“It can be our secret,” said Sharon glancing at her brothers crotch.
Later that day the pairs parents, Michael and Jane, announced that they were going out for a meal and told the siblings to behave
themselves although obviously they had no idea of what was developing in Sharon and Ian’s minds.
With the house to themselves and Sharon still in her tight trousers approached her brother. “Ian, would you like to touch my arse?”
“I can’t…I mustn’t…”
“Who is going to know? I will not tell anyone and I am sure that you will not.”
She turned her back to him but smiled over her shoulder and Ian hesitatingly moved towards her. He slowly stretched forward with his right hand and touched her right buttock.
“That feels nice Ian,stroke my cheeks.” He moved his hand over her mounds and she mewed an, “Ummmm…” He got more adventurous and ran a finger down her arse crack.
“Oh yes Ian that is sooooo sexy.”
Her left hand reached behind her and found the large lump in the front of his trousers which she started to massage.
“Take my trousers down Ian,” she breathed.
The nervous but very aroused seventeen-year-old pulled down his sisters trousers to reveal her knicker covered buttocks.
“Now take your trousers down.” she said huskily.
“Sharon, we shouldn’t be doing this.”
“I know, but it is fun isn’t it?”
Ian did not argue and lowered his own trousers leaving his erection bulging in his underpants.
“Now take down my knickers and lower your pants.” Sharon was seemingly in control but her cunt was soaking.
Ian gasped as he pulled down his sisters knickers to bare her glorious backside. “And your pants,” she reminded him.
Ian lowered his pants and Sharon’s right hand was immediately on his erection.She moved back slightly so that his
cock touched her bare arse.She guided his prick to her arse crack and continued to massage it.
“Sharon…I am going to…”
His spunk shot against her and ran down her arse crack and she herself came.
The siblings relationship could never be the same again.
