Polly want a

A long time ago, I heard a story about a guy with a parrot on his shoulder who robbed a bank.
“STICK EM UP!” shouted the parrot. “GIMME ALL YOUR CASH!”
The guy didn’t say a thing. Didn’t make any faces or gestures.
He just had his hand in his pocket, he might have had a gun.
“STICK EM UP!” the parrot said again.
The teller called for the manager.
The manager went into the break room and got a packet of saltines.
He gave one to the parrot, who ate the crackers.
And the guy walked out the door.