maghanap ng salita, tulad ng basic bitch:
 
1.
The act - either planned or unplanned - of falling to sleep after masturbating.
I was just going to rub one out, but I ended up masternapping for an hour.

Bob's been away from his wife for two days, so he went upstairs for a masternap.
ayon kay ScottNWDC ika-16 ng Mayo, 2011
 
2.
Where somebody goes and masturbates, then quickly falls asleep.
"gotta go masternap"

"*Fap Fap Fap Fap*

"Zzzzzzzzzzzzz...."
ayon kay Master Napper ika-02 ng Oktubre, 2011
 
3.
When you masturbate and the climax is forceful enough to knock one into slumber.

Invented by Jeremy from Boise.
"Dude, you look well rested."

"Ya, bro, that's because I took a master nap after school today!"
ayon kay MasterNapper ika-05 ng Setyembre, 2011
 
4.
When a male/female masturbates before bed, in an attempt to fall asleep during orgasm. Masturbation + Nap= Maternap
Timmy: jeez man you were out like a flash last night...?

Billy: yeah bro, had a cheeky masternap and fell right asleep

Timmy: aww man WTF thats sick

Billy: dont lie....we have all done it

Timmy: yeah....
ayon kay xXmC-KeNzIeXx ika-18 ng Nobyembre, 2011