Top Definition
A word used when sealing a deal or completing something. Also means awsome, cool, amazing.
Francis-Any Questions? Going Once, going twice, Kaboomski!

Dude(upon finishing a history project)- Took me forever, but it's finally kaboomski.

TJ- That chick looks kaboomski

Guy1-did you see the previews for that new movie?
Guy2- Yeah, it's going to be Kaboomski.
by Cory Sweetcorn January 14, 2010
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