One of the joys of writing about one's fantasy is that anything can happen and in mine lots of things take place which in reality I know just wouldn't.
*
So my next adventure with my hot 59 year old Mum also involves my horny younger sister Kath. Kath is 3 years younger than me, 37, married with 4 children. She like my mum is also endowed with large tits and I can remember as a teenager being fed up that her tits were bigger than mine. When I met my hubby, Kath used to flirt with him outrageously and because of this we sort of fell out and only really started to get on again when we were both married and I thought she wasn't a threat anymore. It is only over the last few years that my sexuality has changed and I have desired more and more sex that Kath has figured in some of my naughtier thoughts along with my Mum.
So in this fantasy I am back at Mum's and we have just started on each other. We are kissing slowly and gently, our lips brushing and the tips of our tongues just slightly touching. My Mum starts to fondle 1 of my tits, again telling me that her girl feels good, she has just reached into my blouse when the front door goes and then Kath bursts into the lounge. I quickly rearrange myself as my Mum leaps up. Kath is visibly upset and sits down on the sofa and blurts out her tale of woe, which basically boils down to her husband Clive being a right bastard.
After the proverbial tea and biscuit and exhortations of sympathy from me and Mum, Kath has calmed down.
It is then that she looks at us both inquisitively and asks "What were you 2 up to when I came in?"
"We were just chatting," Mum replies.
Kath though has a naughty glint in her eye and says "Only I could have sworn you pulled your hand out of Al's blouse."
Me and Mum laugh but it is very unconvincing even to me.
"Don't be silly dear, why would I be doing that," Mum says.
"I don't know," says Kath, " But I am sure that is what you were doing."
Within me I want Kath to know and I feel a wave of excitement flow through me just thinking about Kath knowing what me and Mum are up to.
"Are you jealous?" the words are out of my mouth before I know it.
I see my Mum's look of horror, but after all we are having an incestuous relationship which my hubby knows about so why not involve my sister.
"Are you 2 having sex together?"
"Yes," is my curt reply.
Kath just shakes her head looks at Mum and says "Really?"
Mum just nods and then explains how it all started (see fantasy 1).
"I've always fancied lesbian sex," says Kath, "but never dreamed of doing it with you Mum or you Al."
"I can satisfy both my girls," says Mum, "If you want me to."
I decide to give Kath a show, so I grab Mum and start to kiss her there on the sofa. As I do, I undo her blouse all the way revealing her big tits encased in a white lacy bra. Mum is soon snogging me back and I fondle her large heavy tits feeling her nipples harden through her bra. As Mum starts to lick my face I look across at Kath who is watching intently.
"Is Ally Mummy's good girl?" I ask hoping to raise some sibling rivalry.
"She's the best," Mum says as she kisses my neck. I push Mum back and reach behind her and undo her bra, pulling it up to reveal her naked white tits to her youngest daughter.