Definition

The setup to the oldest and most groan-worthy yo-mama joke in existence—a punchline so bad it kills in middle school and dies everywhere else.

Example Usage

Kid 1: 'Hey, do you know Joe?' Kid 2: 'Joe who?' Kid 1: 'Joe mama!' *everyone cringes*

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=joe%20mama&defid=14435134)