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!
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.