A guy looks out his window one morning and notices a big gorilla in
the tree in his front yard. He calls the animal warden, asking for help.
Later that day, a truck pulls up to the house and the warden gets
out, carrying a shotgun and leading a vicious-looking dog.
The guy greets the warden and asks, "How are you gonna get the ape
out of my tree?"

The warden replies, "Here's the plan. You hold this shotgun and I'll
climb the tree and shake the branches until the ape falls. Then this
trained dog here will grab the ape by the balls and drag him into the
truck."

The guy says, "Okay, but what do I do with the shotgun?"
The warden says, "If I fall out of the tree before
the gorilla, make sure you shoot that damned dog!"