Mario Kart Slut
Any person who passes you or uses an item on you on the Nintendo game, Mario Kart. This term is most often used when someone hits you with any kind of turtle, bomb, or steals an item.
*Elizabeth hits Nick with a turtle right before Nick crosses the finish line*
Elizabeth: That's what you get for hitting me with that blue turtle!
Nick: You are such a Mario Kart Slut!
Elizabeth: That's what you get for hitting me with that blue turtle!
Nick: You are such a Mario Kart Slut!