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An acronym for What Happened I Blacked Out. Whibo is commonly used to convey the fact that you drank so much alcohol that you can't rememeber shit from the night before. Whibo explains why you set the couch on fire, tossed your phone in the lake and stole that $100 bucks off the bar.
Tmo: "Holy shit TJ! I can't believe you are still alive after all that shit you burned last night".

TJ: "Whibo".
by tj and the goat March 04, 2008
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