1 definition by ihad2doit

Top Definition
(N)A man's penis
(adj))A particularly stupid person, usually a man
example 1

Jim- "yo man im about to run an play in

Tom- "can you please stop being a yak? honestly? "

example 2

Jim-" yo son this chick Alex sucked my yak yesterday!"

Tom-" Oh shit that's a booster"
by ihad2doit October 05, 2008

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