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An onomatopoeia used in the video game "Sonic Blast Man II." The word is used similarly as "Boom", "Pow", or "Bam." The word was made somewhat well known by a YouTuber called "ProJared" who reviewed the game, and made fun of the word.
by Hyde233 July 30, 2015
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A phrase that is usually used at the sight of something or someone who appears to be fatty.

It is also a game similar to padiddle. The object of the game is to spot an overweight person and say bagoom while either clapping or hitting the roof of a car. The loser of the game has to remove one article of clothing. Once the person has lost all of their clothes they are required to eat five double cheeseburgers.
As the waitress brought out the hot chocolate with whipped cream on top, i exclaimed, "Bagoom!"
by Bagoomster August 27, 2009
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