The president is walking out of the White House towards his limo when a possible assassin steps forward and aims his gun.

A Secret Service agent, new on the job, shouts “Mickey Mouse!” This startles the would-be assassin and he is captured. Later, the Secret Service agent’s supervisor asks him, “Why the hell did you shout Mickey Mouse?”

Blushing, the agent replies, “I got nervous. I meant to shout…… Donald, duck!”