Oh-dark-hundred. I'm not awake, so I don't know what time it is. I roll over, stretch ... and feel little kitten teeth clamping down on my big toe. It doesn't hurt, thanks to the intervening blanket and sheet, but it definitely pushes me toward "awake," rather than "asleep." I freeze, he relaxes, and I move again. Again, chomp on big toe.
I think it was Whitey, since he's more of a toe pouncer than his brother. The Mist of Doom reminded him that toe pouncing is not allowed.