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1.
Doing good during a game or just ballin.
Ya boy is boochin right now. He got 5 touchdowns.
by The Gooch (DPH) July 10, 2008
 
2.
Boochin' means to express how awesome or amazing something is.
Man that party was boochin' last night.

Dude, did you see that hippo snag that monkey, that was so BOOCHIN'?!
by L.J. Boomboxers February 09, 2010