A teacher is in the class with three blind kids. She tells them, "If any of you can clap your hands three times I'll give you an ice cream cone."
The first kid claps his hands once and misses twice.
The second kid claps his hands twice and misses once.
The third kid claps his hands three times. The teacher says, "Good job." Then, she gives him an ice cream cone. He opens his mouth and smashed the ice cream on his forehead.