A guy was standing in front of the gorilla cage...

A guy was standing in front of the gorilla cage at the zoo when a gust of wind swept some dust into his eye. As he rubbed his eyelid the gorilla went crazy bent open the bars and beat the guy unconcious.

When the guy came round he reported it to the zoo-keeper. Nodding, the zoo-keeper explained that pulling down your eyelid means "screw you" in gorilla language. The explanation didn't make the man feel any better so he vowed revenge!

The next day, he purchased two large knives, two party hats, two party horns, and a large sausage. Putting the sausage in his pants, he hurried to the zoo and went right up to the gorilla cage where he opened up his bag. Knowing that gorillas were natural mimics he put on the hat - the gorilla looked at him, reached through the bars grabbed a hat from the bag and put it on. So far so good...

Next the guy picked up his horn and blew on it. The gorilla reached out picked up a horn and did the same.

Then the man picked up his knife - pulled the sausage out of his pants and sliced it in half. The gorilla looked at the knife - then looked at his own crotch - looked at the man and pulled down his eyelid.