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1.
Used to replace most notably "fuck it!" due to the frequency of it's use by Dave S.
Al: Are you going to hockey tonight?
Blue: Naw, I'm Dave S'in it.

Geoff: Where's Blue?

Al: He Dave S'ed.
by canuckleheadmorgie January 01, 2012
 
2.
A small gangster
He's one tought Dafe
by Andre July 03, 2003
 
3.
Another word for the police
Watch out the Daves around the corner
by MATTHEW AKA PANGUS September 06, 2007