Smokey Bear

(The bear has two buttons, "You" and "Me")
Smokey: Only who can prevent forest fires?
(Bart presses the "You" button.)
Smokey: You pressed "You," referring to me. That is incorrect. The correct answer is "You".
(Bart kicks the bear.)

Bears know everything.
If they don't know everything, they will find out.
Bears don't sleep, they wait.