1 definition by xXmC-KeNzIeXx
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....
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....
by xXmC-KeNzIeXx November 18, 2011