Goomba diabeetus

Goomba diabeetus is a fatal disease spread by Goombas in the game, Mario Simulator.

How it works
When someone gets hit by a Goomba, they get scared and look at them while infected. In just a few seconds, they die.

Appearances
In Retarded64: Mario Simulator, which is so far its only appearance, Mario gets it after killing a Goomba, but is then hit by one, causing him to badly get the disease. He stares at the Goomba, while someone says "Diabeetus..." His eyes then turn to Xs and he then dies after, causing him to start back at his house.