" But... but, isn't that incest?" I asked stupidly."Yeah, Daddy," Lynn said with a devilish little grin. "But you know what they say, don't you? Inces... is best!"Jenny laughed and playfully slapped her sister. I didn't know what to say or do, but the way Lynn was massaging my crotch had my cock harder than an iron bar. And Lynn could obviously feel that. As forbidden as what they were proposing was. I couldn't deny that I now found both my daughters immensely arousing. They nuzzled up against. " So what did you want than?" i said with a hint of sensuality and a little anger. " I wanted to see if you wanted to do something until your brother got back"Im only 17 now. just turned. it was making me really hot that he was asking while my cock was making a tent in the sheets. " Well now that im here....... maybe i can give you a helping hand"I was in shock . I've waited for this for a long time now." I mean dude i don't normally go that way but if your offering to help me out than sure why. Robby's balls were bouncing off of my cunt lips as he continued to grunt and pound me. After what seemed like an eternity, I felt Robby's cock grow and felt spurt after spurt of hot come filing my asshole. Robby grunted and he continued pounding my ass for another couple of minutes. Finally spent, I felt Robby's cock begin to soften and he slowly pulled his limp dick out of my ass follow by what seemed like a gallon of his cum. He spread my ass checks and looked at how large my gaping. She sat on the side of my bed, rested her hand on my thigh, and we began to talk. She stunned me with what she had to say, it began....."Last night was no fluke, we'd been planning it for years." What! What was mom saying? They'd planned on fucking me? But how? Wasn't it I who'd seen them fucking and became so excited? That's when my mother went on to explain that for over two years my father had expressed a desire to have sex with me. You see, my mother and father are swingers. They live for.