look up any word, like blumpkin:
 
1.
did a great job; pulled it off well; had a lot of success with something. Used by really cool teens in the Brooklyn, NY, and probably elsewhere in NYC.

Can also be used as "Bungoo"
You walk in with a new outfit and your friend says, "Damn, girl, Jahbungoo!" or, you get a 100% on a test and you yell, "Jahbungoo!"
by Carly&Spencer December 20, 2011