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.

When you eat dirt for the first time and leave your family to build a shack in the woods

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.

A guy (family friend or an uncle) who can playfully corrupt children's minds on what not to do, especially in public areas

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.