I carried on the role play, ‘why are you out here’ I asked. ‘I was cycling back from a friends house and stopped for a wee, I was meant to meet ...y husband halfway’ she replied. I couldn’t help but instantly up the role play story ante - ‘so why are you naked and fingering your cunt?’ was my rather coarse repost. I didn’t expect an answer to this one, she’d often clam up a little and take a steadier approach. Not today though. She immediately responded with ‘I’d stopped for a wee and the heat. “Mom your pussy feels so good, do you want me and dad to cum inside you”, “oh god son please fill me full of cum, cum inside you mom the whore and slut”, thinking to my self “where did that come from”. So me and dad pick up the pace and between the groans and moans of mom, and her begging me and dad to fill her twat with cum, man did we there was so much come it dripped out of her pussy and ran down her thighs.Me and dad pull out of her and she just rolls to the side and falls a sleep, my sis. We had a pretty deep conversation, mostly about you guys. She’s an interesting woman.”Knowing wasn’t accepting, and it took another few months before she came to terms with the situation. I walked into her room one day to see her staring intensely at a chessboard. “What are you doing, Grandma?”She rolled her eyes and grinned. Jen seems to think I got my sarcastic wit directly from her. “What does it look like I’m doing? I’m playing chess.”“Against yourself?”“No, dummy, not myself. I’m playing. His cock smelled nice under the boxer shorts.I touched his underside with my lips and smooched on him.He shook me up and with both strong hands made me sit on his lap.He held me from behind and cupped his palm on my breasts. He kissed me on back of my neck and smelled the perfume. Ahaaaaaaaa!!! He grunted. He explored my stomach further and searched for an opening in my silk dress to suck my breasts.He fondled my hips in a circular motion and felt the size with his palm. I was Getting excited.