Top Definition
What you should call your work colleagues if they ever have a sick day.
example 1: nice to see that your in today "gravy bum".

example 2: andys not going to be in today hes off sick.
"i bet he has gravy bum"
by yesson20 December 16, 2011

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After doing a shit and not wiping properly, when your butt gets sweaty it produces a gravy like residue, Leaving marks on your underwear.
Check out the skids on peters boxers, pure gravy bum.
by The jimmywhack August 23, 2016

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Used to describe the physical appearance of diarrhoea, including its often impulsive behaviour (and/or occurance after eating mcdonald's). Also used as crude humour to describe one's symptoms.
Joey's been knocked down with a case of gravy bum.

I got terrible gravy bum after having that quarter pounder!
by Blank__ October 10, 2008

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The Urban Dictionary Mug

Your favorite word on a white mug.

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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.

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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