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1. When something is good, great or amazing.

2. When someone does something good, great or amazing.

3. When someone says something good, great or amazing.
"That club we went to last night was boom"

Boy smashes a window - "Yeah dats boom"

"Let's go down the park and get some cider" "Yeah boom"
by LuKe-87 January 10, 2006
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15
The defensive tactic that Muslim teenagers who are being bullied use to defend themselves. just yell, or write the word
Bully: Hey, ACHMED, give me your lunch money!
Ahmad: BOOM!
Bully:AAAAHHH
by spotlight January 17, 2009
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16
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!!!!"
by Dime132 November 24, 2010
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18
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.
by VaatiKaiba August 02, 2011
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19
Proper Noun: 1. A song made by System Of a Down, featured on the album Steal This Album! This song focuses on how completely retarded war is, and has a music video made of it that included footage from the February 15, 2003 Anti-War Protests that Michael Moore helped out in making. The song includes lines about how many children die of starvation while we blow the money that could have been used to feed them on making bombs that will only kill more people and how politicians keep up false images. An extremely good song.
1. Every time you drop the bomb you kill the god your child has born...Boom! Boom! Boom! Boom!
by Flap Jack February 27, 2006
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20
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!
by BASSsovereign April 21, 2009
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