I went to bed before you did; you were still playing a computer game but I was falling asleep in front of the TV, so I kissed you goodnight and stumbled off to bed.
And now I wake up to your stiff cock poking me in the hip. I open one eye and see the red LED numbers on the clock – 2:00 a.m. Oh jeez, you've got to be kidding me. I shift a little and you wrap your arm around my waist, spooning me. And snore. I giggle because you aren't even awake. At least, your mind isn't awake. Some parts of you are. I wriggle against you, liking the way the hair on your chest and arms tickles my bare skin. You mumble something in your sleep and pull my naked butt tight against your crotch. Your erection nestles perfectly in the groove and I feel you grind your hips against me – more purposefully now, but you mumble something incoherent and I know you are still dreaming. I stifle a laugh in my pillow. Not quiet enough I guess, because I feel you stir and your arm tightens around me. You kiss my neck, right by my ear where you know it makes my nipples hard, and I know that you are waking up, too.
Squirming out of your grasp, I manage to roll over and face you. It's really dark, but there's a little moonlight shining in the window and it looks like you are grinning at me.
"What are you thinking about?" I whisper.
"Quantum physics," you whisper back, fondling my tits.