Top Definition
Acronym for "What's the idea?" Soon to replace the old and overused "WTF."

Can also be said "WTBI" for "What's the big idea?" to place greater emphasis.

Originated from the Three Stooges short films.
omfg u hax.
no i dont.
i will kik u!11111
omg y did u kik my friend??? wti???
by Phoojoeniam January 08, 2004
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