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's cage where he opened up his bag of goodies. Knowing that gorillas were natural mimics, he put on a party hat. The gorilla looked at him, reached through the bars, grabbed a hat from the bag, and put it on.

Next, the guy picked up his horn and blew on it. The gorilla reached out, picked up his horn, and did the same. Then the man picked up his knife, whipped the sausage out of his pants, and sliced it in half. The gorilla looked at the knife, looked at his own crotch, looked at the man, and pulled down his eyelid.