1 definition by seaman27

Top Definition
A word used to express satisfaction. or after something that has happened (generally after a good thing). Also if something is done right multiple people will say boom. If Boom is said then sometimes people may copy and say it after.

Can be a random outburst.
And the winner is...SAM!

Sam: "BOOM!"

Luke: "BOOM!"
by seaman27 March 29, 2011

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