Her howls of ecstasy were all I need to know that she was enjoying it. “Oh, fuck me! Fuck me! I'm your dirty slut, Master!” I saw the force of my ...hrusts as they rippled up through her flesh. It didn't take long until she screamed out again, I could feel her as she tightened around me more, as if her insides were trying to milk my cum out of me. I wasn't there yet but I wasn't far off. I reached out with my left hand and grabbed a hand full of her hair, my fingers disappearing into the red. “You gonna cum for me Randy, you gonna fill your little sister up with y…” she trailed off. Her orgasm started and hit her so hard she couldn’t even talk, she just let out low moans and gasps of air. As she shook in place on top of me I felt my balls tighten, and gave her a warning of what was to come, but I doubt she heard me. Ten strokes later I screamed to her I was cumming and filled her up with eight big spurts of sperm. Her eyes grew wide as she shook again as she was taken over by. .si..........si.........I love more of this Jim." She gasped making a hissing sound.I repeated my "red hot piston" trick. I kept my cock inside her until I thought it has lost its heat, then I took it out and heat it up with another hot towel and pushed it in again. I did this for three or four times and her pussy was dripping juice. Next I started fucking. My cock felt a bit numb but mom's orgasm came after five minute of sharp, short jabs, the way she liked it."Wow, this is the real Hot. I still didn’t really look around because I was kind of busy, but there were still 2 other couples on the same mattress as her and her head was touching the girl lying behind her. Not that either of them cared. We kept at it until we were both exhausted. I sat back on my little sofa and after a few seconds rest she leant forward and started to suck my dick. It was only then that I could really take in what was going on around us. There was a couple fucking in front of a porn video to my left,.