Top definition
When you take a dump in the shower and then have to squish it down the drain with your foot.

The term stems from a rumor - most likely false - about a deleted scene from the John Candy movie.
Man, I couldn't wait to get out of the shower and dry off, so I just Uncle Bucked it.
by FreeNachos June 01, 2011
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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2
An Urban legend present in the northeast. A sly character who's true identity is unknown to the law and public and is wanted by numerous police forces around the area for felonies against youths. Buck was prone to stealing youngsters for his own pleasure.
Kid 1: I think uncle buck is following us.
Kid 2: Nar man divin't buck iz!
by jabbadahutWEEKINDEEJABBA August 11, 2011
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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3
A guy (family friend or an uncle) who can playfully corrupt children's minds on what not to do, especially in public areas
My uncle buck taught me how to drive like a madman as in one of The Grateful Dead's song Casey Jones.
via giphy
by Embah November 17, 2016
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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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4
an uncle buck, is someone who impersonates the late john candy... usually found to be a 23 yr old, balding, assistant manager from stockport named rob... coincidentally, they all work at gamestop in stockport too.
my god, you look like Uncle Buck
by Lord Jimmington October 01, 2005
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Golden Shower Plush

He's warmer than you think.

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