Maybe I am naive (I can hear you all saying, naw!) but how in the holy hand-grenade can someone sleep through genital stimulation? I mean, I've heard of wet dreams and all, but as far as I know, that isn't caused by varying pressure, etc. that would occur during stimulation by another party.
OK, you can all quit snickering at me.
"Recollect me darlin, raise me to your lips, two undernourished egos, four rotating hips"