The act of male members who engage in the activity of masturbation while discreetly disguising the dirty act as taking "a nap with the door locked and the lights off".
Corey- Tom do you want to play a video game?
Uncle Tom- No I'm gonna take a nap with the door locked and the lights off.
Corey- Oh you mean a special nap
Not really a nap at all. Code word for spanking your monkey, punching the clown, floggin the dolphin, having at yourself, pulling your pork, rubbing one out, or just plain old jerking off.
When I have trouble falling asleep, I take a special nap and then I sleep like a baby.