This guy went to the zoo one day. While he was standing in front of the gorilla's enclosure, the wind gusted and he got some grit in his eye. As he pulled his eyelid down to dislodge the particle, the gorilla went crazy, bent open the bars, and beat the guy senseless. When the guy came to his senses, the zookeeper was anxiously bending over him, and as soon as he was able to talk, he explained what had happened. The zookeeper nodded and explained that in gorilla language, pulling down your eyelid means "Screw you". The explanation didn't make the gorilla's victim feel any better and 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 over to the gorilla's cage, into which he tossed a hat, a knife, and a party horn. Knowing that the big apes were natural mimics, he put on a party hat. The gorilla looked at him, and looked at the hat, and put it on. Next he picked up his horn and blew on it. The gorilla 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 neatly in two. The gorilla looked at the knife in his cage, looked at his own crotch, and pulled down his eyelid.