Kumon Kid
A kid who goes to Kumon and therefore always gets good math grades. They usually suck at any other subject though
Friend 1: How'd you do on that math test!
Friend 2: Great! I sat next to Johnny so I copied off him.
Friend 1: No fair! Johnny's a Kumon Kid
Friend 2: Great! I sat next to Johnny so I copied off him.
Friend 1: No fair! Johnny's a Kumon Kid