A zoo director knows that his facility is in dire financial straits, and that without something spectacular - some new attraction - he's going to go under. The problem is that he doesn't have the money to buy any new animals. So, in a fit of genius inspiration, he approaches one of his keepers one day and makes him an offer - a 20% raise, if, instead of working as a keeper, he will don a gorilla suit and act like a gorilla on exhibit.
The keeper accepts the offer and becomes a huge hit. In fact, he absolutely loves playing to the crowds, beating his chest and playing on the tire swing. Pretty soon, he gets so into his act that he climbs to the top of the tallest tree in the exhibit and starts jumping around like mad.
Suddenly, the branch that he was standing in snaps off and he falls. By bad luck, that branch happened to be overhanging the tiger exhibit next door.
Dazed, afraid, but unhurt, the keeper in the gorilla suit sits up... and sees the tiger running towards him.
"Help! Help!" he screams, when suddenly the tiger pounces on him... and whispers in his ear.
"Will you please shut up?" says the voice in his year (one that sounds suspiciously like an old keeper he hadn't seen for a few weeks), "You're going to get us both fired!"