Lisa looked at her father across the breakfast table and returned his smile uncertainly. She considered his request quite calmly, surprisingly so she thought, given the nature of that request. After her initial shock, the idea of inserting a finger into her brother’s anus to help him ejaculate the maximum possible amount of semen into her mother’s mouth was becoming extremely enticing.
“All right, I’ll do it,” she murmured at last, casting a fleeting glance at her brother before shyly looking downwards.
“There’s no point in trying to sound reluctant about it, Lisa,” said David mockingly. “We all know you’re dying to finger my arsehole.”
Lisa poked her tongue out at her brother. “Don’t kid yourself! I’m going to do it to help mum out, that’s all.”
“In that case, darling,” said Helen, “would you mind stripping down to your underwear before we make a start? I’ve never understood why you have to wear such unflattering clothes. You have such a lovely body, when you choose to show it off.”
“I’m way too skinny, Mum!” Lisa wailed. “Please don’t make me take my clothes off!”
“Your mother and I would never try to make you do anything you don’t want to, Lisa,” said Peter soothingly. “Couldn’t you at least take that horrible, baggy tee-shirt off, if only to please me?”
“All right, Daddy,” agreed Lisa, as usual unable to resist her father’s blandishments. She hesitantly pulled the tee-shirt over her head to reveal her small but pert breasts, covered by a white, lacy bra.
David whistled appreciatively.
“There’s no need to be sarcastic!” cried Lisa, glaring at her brother.
“I’m not being sarcastic, idiot! You’ve got a great pair of tits! God knows why you insist on hiding them away.”
“I thought you preferred the more voluptuous figure, like that slag you used to go out with, Tracey Grant?”
“Tracey was certainly free with her sexual favours,” said David with a grin. “I’ll admit I was fascinated by her big, bouncy knockers, but I was a callow youth then. I think you have a much sexier figure than Tracey Grant, I swear to God!”
Lisa gave her brother one of her sweetest smiles, loving the way his eyes lingered on her breasts. She didn’t doubt now that he found her sexually attractive and that boosted her self-confidence to no small extent.
“Come on, Lisa,” urged her father. “Slip your jeans off now. Don’t be shy, girl!”
“Yeh, sis, get ‘em off,” David said. “Let’s have a good look at your sexy ass.”
Lisa rose from the table and stepped out of her loose-fitting denims. Her brief knickers, which matched her bra, emphasized the alluring curves of her firm buttocks, and immediately drew David’s eye.
“Wasn’t I right, Dad? Doesn’t Lisa have an absolutely fantastic arse?”
“You’re not wrong there, boy. Gorgeous, just like her mother’s!”
“Aren’t we lucky to have two hot bitches in the family?”
“David!” said Helen with a smile. “Perhaps your sister doesn’t appreciate being referred to as a hot bitch by her brother.”
“Oh yes, I do!” said Lisa emphatically, to general laughter.
“I’m getting hard just looking at you, sis,” David moaned.
“It’s time we stepped into the living room, then,” suggested Helen. “Assuming, that is, David, that you’re still willing to fill my mouth with your delectable cum?”
“Your assumption is correct, mother dear. By the way, I’m also more than willing to fill your slutty cunt with my delectable cum, whenever you so desire.”
“All in good time, David,” said his father. “Your mother’s slutty cunt, as you so charmingly refer to it, will eventually be yours to use in any way you wish. Remember that patience is a virtue.”
“Anything you say, Dad.”
David happily accepted that, for the time being, intimacy between himself and his mother would be supervised by his father. He didn’t find this at all inhibiting, realizing that the buildup of anticipatory erotic tension as he waited for permission to fuck Helen would hugely increase his pleasure when that permission was finally granted.
Helen, of course, wasn’t asked for her own permission, nor would she have expected to be. She simply yearned to pleasure, and be pleasured by, her husband and son, in whichever way they saw fit. And, despite having never previously felt sexually attracted to other women, she was beginning to experience desires for her daughter which daily became stronger.
“On your knees, woman!” David ordered with mock severity as he followed his mother into the living room.
Helen obeyed her son’s instruction without demur, helping him to remove his trousers and underpants as he stood before her. Gently stroking his semi-erect shaft, she softly sucked up the precum seeping from his piss slit.
“Take it easy, Mom!” cautioned David. “I don’t want to cum too soon. The longer I can hold on, the better.”
Lisa slipped to the floor by her brother’s side and, encouraged by her father, hesitantly fondled his firm buttocks.
“That’s the way, sweetheart! Spit on your finger now and see if you can push it into David’s bumhole.”
Lisa obediently dribbled saliva on to her index finger and, gingerly sliding it between her brother’s bum cheeks, felt for his anus. A girl of hitherto limited sexual experience, she found the lasciviousness of the whole situation to be extremely arousing.
As she eased her spit-smeared finger into the tight grip of David’s anal sphincter, she noted how her mother was cleverly stimulating him to the utmost. One hand wanked his turgid shaft, the other fondling his cum-heavy balls, while she ran the tip of her tongue along the ridge of his swollen glans.
“Oh, fuck! Yes, Lisa!” moaned David as his sister, growing in confidence, probed more deeply into his rectum and began to finger-fuck his arse with an almost gleeful enthusiasm.
For Lisa, the most emotional aspect of the whole experience was when her brother tenderly stroked her hair and face, softly brushing his fingers against her lips. Instinctively, she took the fingers into her mouth and sucked on them wetly, her own finger now pistoning rapidly into David’s sticky arsehole.
“Give it me harder, Lisa, you dirty slut!” begged David as he sensed himself swiftly approaching an intense climax.
As she vigorously sought to do so, Lisa’s finger slipped from her brother’s anus. In the grip of an erotic excitement such as she had never experienced before, she twisted her ring finger aound it and fiercely jabbed both digits into the hot, velvety confines of David’s bowels.