Top Definition
The rotten bit at the end of a joint that no one wants to smoke but someone always will.
PADDY: Here pass that joint there
DAVE: its just the gak mate. you still want it?
PADDY: Yeah fuck it.
PADDY: awwwww i hate the fuckin gak!
by madtie2 September 30, 2009
5 Words related to The Gak

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