Top Definition
A giant bottom that looks as if it could explode from the clothes that are covering it at any moment.
Holy moly, watch out for that BumBomb!
by mrhenhen June 29, 2015

The Urban Dictionary Mug

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A bomb shoved up someone's ass.
AAAHHH THAT GUY HAS A BUM BOMB! Save Me!
by Steaver370 April 26, 2004

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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