Top Definition
abbreviation for "I know I am, but what are you?", a phrase popularized by PeeWee Herman. Commonly used in when trading insults with middle schoolers during Counterstrike or Everquest pissing matches.
foo: IM IN UR BASE KILLIN UR D00DZ
bar: omgwtf... u suck d00d
bob: d00d ur an @hole
foo: IKIABWAY
bob: ?!
bar: wtf does that even mean?!
foo: kthxbye
by herichon September 04, 2006

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