Jill enters my mouth again, and we repeat the process. I nudge her ass and feel the head enter my throat. Breathing through my nose, I feel her cock i...ch deeper. I open my eyes and see her swinging balls only inches from my nose, and know I am about to achieve my goal. With a gentle thrust, her balls nestle against my face, and she begins to gently fuck my throat. I give her a light slap, and she withdraws, leaving me feeling empty. "You did it, Monique, you swallowed the whole length!" she. I applied some 'Astroglide' lube to my semi erect cock before slipping the Asslock Cock Ring over the whole package, next I rotated it backwards before easing the lubed steel ball gently up into my bum. With a wet 'shucking' sound it slipped snugly home, now I was ready to be pleasured.My cock swung heavily from side to side as with pounding heart I positioned myself between Wifey's wide open legs.I looked down at my manhood squeezed into the tight steel ring of the Asslock Cock Ring, engorged. " The study had lasted for three months, and she had been in the lab 3 or 4 times each week. Almost every time she had had a different partner. Most times it had been okay, but once was very distasteful, and a couple had been VERY nice. Only that one time it went poorly did she not have at least one orgasm. Once she had "gone off the chart" she had been told later by the people watching the monitors. It had recorded that she had 27 orgasms in 25 minutes. All she was aware of was that she had. She looked around the table getting approving nods from the others, and then blushed when she looked at Lena and me, obviously thinking she'd been insensitive for going on about a sexy guy in front of a couple of lezzies. Little did she know that I, like them, would give an awful lot for a fuck with the hunk she'd just mentioned.Sophie was beginning to irritate me, she wouldn't stop glancing at Lena, and me and smirking. She looked as if she was trying to imagine what we got up to in bed. I.