Three guys are in a Cessna. The first drops a penny out the window. The
second drops a pencil and the third a bomb. When the plane lands, the
first guy goes to see where the penny landed. He sees a guy swearing and
trying to get a penny out of his forehead. The second sees a girl holding
her dog who has a pencil through his head. The third guy sees a guy
laughing his head off. He asks, "Why are you laughing?" The guy says, "I
was cooking on my BBQ when I farted..." "What's so funny about that?" "It
blew my neighbor's house apart!"