A term for big boobs
guy one: Gah!did you see her booms?!
guy two: Yeaa man! they were like G cups!
de nananaBatman 22 septembre 2009

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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!"
de seaman27 29 mars 2011

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BOOM is widely used in the beer pong community for pretty much any reason. It is shouted as loud as possible so that everyone is aware of what just happened and are now compelled to BOOM as well. Can be used in conjuction with LFG
Scenario 1
Mike - "I just smashed some bids tonight"
Chris - "BOOM!!"
Mike - "LFG"

Scenario 2
Crowd - *chanting Iron Wizard*
Pong Ferrigno - *hits cup*
All in attendance - "BOOOOOOOOOOOOOOM!!!!"
de Dime132 24 novembre 2010

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Used when one has just won an argument, debate, or other point of conflict. Most effective when the winner gets overexcited, slams their hand on the table and tries to rub it into their opponent.

Hilarity added when the winner is an Irishman in London.

Verb: to boom.
And that, good sir, is boom!
de VaatiKaiba 2 août 2011

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An exclamation used to define / draw attention to an excellent outcome. Can be used without any preamble. Typically accompanied by suitably emphatic hand / arm gestures.
"I just made the most awesome dinner - boom!"
"Check that backflip - boom!"
Walks into room wearing new shirt - points to shirt "boom!"
de Jack Union 2 mai 2013

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a phrase coined by electro bass house producer Will Bailey, meaning the playing of a fat record at a party or similar social event.
When a sick bassline drops at a party...
Say:

BOOM!
de BASSsovereign 21 avril 2009

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adjective used to describe a pretty girl.
"yo guy, that girl is BOOM"
de bacdafukup 30 avril 2003

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