One step ahead joke:

Donald Trump is walking out of the White House and heading toward his limo, when a possible assassin steps forward and aims a gun at him.

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 takes him aside and ask, "what in the hell made you shout, "Mickey Mouse?"

Blushing the agent replies, "I got nervous. I meant to shout, "Donald, duck!"