Why did the girl fall off the bike? Somebody threw a refrigerator at her. Why did the refrigerator fall off the bike? Somebody threw a little girl at it. What has four wheels and flies? The town garbage truck. What's green and sits outside on the back porch? Paddy O'Furniture. Is your refrigerator running? It is? Then you'd better catch it before it gets away! What's green, weighs forty tons and lies at the bottom of the ocean? MOBY SNOT!