Top Definition
A very large woman. The more O's the bigger the Boom.

An Exclamation regarding a big girls weight. . .at the bar.
They do catch on quick, however, and may call you out. if this happens, blame the person next to you.
Dude did you see that Booom! that Sean Mulinax took home last night. Boooooooooooom!
by P. Man January 13, 2007

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