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You are in the middle of having sex. She asks you to spank her ass so you waboom her. A waboom is an ass spank with a mighty swing and mighty force during sex.
I waboomed her so much last night.
by Meiwz March 11, 2018
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2
A shout of male triumph, used in the bedroom, but most likely, during an intense session of video games.

NOT to be confused with Wabam.
Game system: Player one wins.
Player 1: Waboom!
Player 2: I died 5 shitty death in that game.
by Pyro Pete August 03, 2010
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