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1.
1. excellent; something that turns out to be profitable; To be lucky or fortuitous
2. To have mischevious intent; what one says when a prank is ready.
Definition 1:
Guy: Hey dude, I found a back entrance to this Strip Club!
Dude: Excesneef
Definition 2:
Guy: Alright, I have the rubber, video cameras, and balaclavas. Let's get that bitch.
Dude: Excesneef.
by Blackstump November 15, 2003