Rubbing himself against me. Using my ass to get off. Foreskin back and forth. In and out from between my cheeks. "Yeah, man. Do it. Do me. Use my ass....He got up close. I felt one of his hands reach around and take my hard cock in his hand. Gripped it tight. Very tight.Now he was jerking my cock in time with his thrusts against my body.Bam, bam, bam he humped against me. Up and down on my cock.I couldn't take it any more."You're making me cum!"Bam, bam, bam, bam. He kept on. "So cum. Cum while I. "I told her as if I were a good student, "What I know is that nature provided that mammals lactate for feeding their babies and that nature made the nursing pleasurable for the Moms. A lot of women who breastfeed enjoy this for the pleasure which it provides them."She smiled at me, "Bravo! I'm lucky you like milk. More?"Olga had a good sense of humor so we laughed a little."What I read on the Net that lactation combined with sex is even more pleasurable. The released oxytocin causes orgasm and. ” I said, “I’ll take my clothes off too.”We looked at Billy, “No way, I’m not getting naked with my sister. You guys are nuts.” but he never moved from the spot he had been standing in.Mike and I began unbuttoning our shirts. Mike was much more muscular than me. His chest and arms were well defined. I however, was very thin. My ribs protruded like a starving dog’s.We tossed our shirts on top of the cooler that we keep our food in and kicked off our shoes. Mike got to his belt first but waited. I know that my step-dad's porn pictures on his PC all have their pussies shaved." Ok so that's two definites. I've got to admit it makes me really wet and horny thinking about expanding our group of fuck-buddies." She unzipped her jacket and lifted her track suit top exposing her polo shirt."Look, my nipples are really sticking out and it's not just the cold."She tweaked her left nipple with the fingers of her right hand. Her eyes closed and she gave that look of pure sex I'd learnt to love in.