Uncle Buck 

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.

Uncle Buck by FreeNachos November 13, 2011

Uncle Buck 

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!

Uncle Buck by jabbadahutWEEKINDEEJABBA August 15, 2011

Uncle Buck 

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.

Uncle Buck by Embah November 17, 2016

Uncle Buck 

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

Uncle Buck by Lord Jimmington October 1, 2005

Uncle Buck

A trans man who sucks up to/kisses the asses of/sells themselves out to transphobes in order to look like "one of the good ones". Example: Buck Angel (the namesake), Victor Barker, etc.

The female version of this is an Aunt Blaire.

Walter: I'm not like these other trannies, I'm cool, honest.
Raymond: Dude, stop being such an Uncle Buck. Shut the fuck up.

Uncle Buck by Florisgrad November 2, 2025

Ur uncle buck don’t know how to fuck

Worst than ur dad les or ur uncle a rapist

Jon:Ur uncle buck don’t know how to fuck
THE EARTH SHATTERS

Ur uncle buck don’t know how to fuck by Mr.sofcok May 21, 2018

Uncle Bucks Mixed Nuts 

The most satisfying nuts you will ever put in your mouth.

Damn i would suck uncle bucks mixed nuts dry.

Uncle Bucks Mixed Nuts by Coontasha Niggalina December 3, 2019