1 definition by FartMaster5000

a person who farts a lot OR someone who is talking crap.
Example 1:
Jim: that girl looks like a whore
Greg:You're a real fartknocker aren't you?
Example 2:
(Jim passes a lot of smelly gas)
Greg: You freaking fartknocker!
by FartMaster5000 May 10, 2010
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