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1.
When you stay up really late (4am-7am) and you crack up at everything in the morning, or hardly have gotten any sleep.
Joe: -sees turtle on side of the road-
Hehehehee....hahaa....

Rob: Whats up with Joe

Steve: Oh, he has the late night funnies today.
by Byy June 25, 2009

Words related to late night funnies

cracking up laughing lawl lol pass out