An introduction to the story.
Some parts are true, most of the details are true. What is unusual about this story is that the main participants are happy for some people to know that they are brother and sister who are sexually involved with each other.
All the characters are real enough.
They are Shel, (wife of) John. Ann, (wife of) Rob. All are in their mid forties except Ann who is mid thirties. John and Ann have quite a remarkable resemblance to each other, with almost Mediterranean looks of long dark hair and naturally tanned skin. As couples they have all known each other for many years and are great friends. John and Shel are swingers, Rob and Ann went to a swingers club with them once, but didn't like it and never pursued the lifestyle, however they are aware that John and Shel do still swing.
John and Ann never minded when strangers mentioned how much alike they both were, it was indisputable that physically and even the way they talked and walked they were every inch brother and sister. Well, brother and little sister to be more precise as while John is average height and build Ann is barely 5ft tall and ten years younger.
However, what a lot of people find disconcerting is the obvious affection that exists between them both, which often exhibits in more than normal public touching between them. Their respective spouses are used to their behaviour and have even been known to tell them to get a room.
The two married couples were as different as chalk and cheese. John and Shel are swingers and very outgoing personalities, always out watching bands or going on holidays. In the early days of their marriage Ann and Rob were also very keen on nights out at pubs and foreign holidays, but when Rob hit forty he seemed to become a pensioner in his outlook. Ann, out of loyalty to him, went along with his wishes to just go to local pubs and give up on holidays abroad, but given the chance would love to relive her earlier party years, rather than be the respectable married woman she is today.
Chapter one.
As he watched her undress from the comfort of his side of the bed, he waited for the moment when she would lean forward, unhook her bra and let her breasts hang free. John loved watching her undress, even though he had witnessed it hundreds, if not thousands, of times before.
They had just returned from a typically good Saturday night out with their usual friends, not to mention the usual 'slightly' too much to drink. Neither was drunk but definitely slightly merry; ok, let's be honest, really merry.
Her breasts weren't particularly large but they were firm and self supporting, just the way he liked them. Once her bra was cast aside she looked over to him, caught his eye, and hooked her thumbs into the sides of her red lacy knickers.
Shel knew he was leching, waiting to see her reveal her recently shaved pussy, so she held his gaze as she started to lower them provocatively. She never quite understood his fascination with her undressing, sometimes he would not spare her a glance if she was naked, but undressing always got his attention.
She only lowered them as far as the top of her divine divide, not revealing even a hint of her lips, teasing him to the end, eking out the seconds like a professional stripper, keeping the best to last.
Then, she slid them down revealing herself to his gaze, with open palms either side of her sex.
"Voilà." She said, with a mock curtsey, "my cunt."
He reached into to the bedside drawer and produced the small chain with the nipple clamps.
"You are fucking joking!"
She said with that smirk that always got him going.
"If you think that we are playing that game after the exhibition you put on tonight, you are joking."
"What exhibition was that?"
"You know bloody well what exhibition, snogging Ann in the bar as we were leaving like a fucking teenager hoping to get his leg over for the first time. Talk about tonsil tennis!
"And particularly after telling everyone she was your sister!"
