look up any word, like blumpkin:
 
1.
When you wank your dick so hard that when you finally squirt your sperm everywhere your so tired that you decide to take a quick nap.

Make sure you clean yourself up before you take the nap or do it in a private area, otherwise someone may walk in and find you completely naked with a flaccid red dick and your stomach covered in sperm.
fap fap fap fap fap fap fap fap fap fap FAP FAP FAP FAP FAP FAP FAP FAP SLAP SLAP SLAP SLAP SLAP THUMP THUMP THUMP THUMP THUMP *exstatic moan of pleasure*

Nap Time
Awaken to your parent's voices:

Mum: I think our son had a wetdream
Dad: Naaahh look how raw his dick his, he probably had a wild wank and was so tired afterwards he fell asleep.
Mum: Ahhhhh a Fap'n'Nap
Dad: Thats right
by Callum6969 May 15, 2009
 
2.
The act of a person masturbating and then going to sleep.
Person 1: hey man, whatcha doin?
Person 2: I'm tired. I think i'm gonna go fap 'n' nap
by Rice Menshorts April 04, 2011
 
3.
A classic fap'n'nap combo is usually combined in men ages 20-40 before they take their afternoon nap.
Man one: Hello is anyone in this thread?
Man two: I am the only one here, But im off for an ol' favorite... The Fap'n'nap
Man one: Better make that the power fap'n'nap!
Man Two: LOLZ TRU!
by Ninja7o0 October 29, 2008