Similar to kaboomski, kaboomsky is an exclamation of excitement or joy.

Unlike, kaboomski however, kaboomsky is said only by people who are trying to force a new word into vernacular. This is very closely related to fetch from Mean Girls.
Ex:
Girl 1: I love Disney! Kaboomsky!
Girl 2: Kaboomsky!
Guy: Stop trying to make Kaboomsky happen.
by Adam G Dawg March 02, 2011

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