A short, unintentional dozing off while at a lecture, boring meeting etc. Usually so short that only you notice it, while other are unaware of your conduct.
I was listening to boring Paul again and I think I had a snap nap.
Noun - To lightly sleep or doze gently for a brief period of time. (Concocted to replace the redundant and oxymoronic "Power Nap). Coined on 09/19/2010.
A Snap Nap "Oh snap this bitch needs a nap". Not to be had in a bad. This could be on a trampoline, a garage couch, a hood hood of a car, a bar top, a club house.... Snap Naps are for the weak and overly intoxicated.