Top Definition
A weapon used, similar to the ban hammer, to tell someone that they fail.
I saw your post on ytmnd forums, and I administered the fail flail to it.

John whacked George with the fail flail after George sent him the o rly owl.

emoxlover and MCRocker were smacked with the fail flail by the admins because emo sucks.
by AWPerative July 26, 2006

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