Top Definition
The sound a forceful poo deposit causes when it makes contact with the water in a toilet.
I squatted down and then fwump! my ass was soaked after a tsunamic reverse flush.
by mrs_equator September 23, 2006

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when you attempt a fist bump, but your friend does a high five ending up in a half fist bump, half high five.
hey man what's up? "fwump!"
by JERALDtc May 20, 2013

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Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

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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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt