Once upon a time there was a slug. It loved to walk around the neighborhood on its lunch break. It would go around the block, leaving its slimy slug trail behind.
One day it came upon another slug. “You want to be my walking buddy?” it asked.
“Sure. I’d love to have some company,” replied the other slug.
The two of them started walking together everyday, spreading two slug trails around the neighborhood like railroad tracks.
While on one of their walks, a man came out of his apartment and stepped onto their dual slime. He slipped, tried to regain his balance, but fell. He landed smack on his head. CRACK!
The two slugs came up to the man, crawled over him, and left their trail on his body. “Sucks to be him,” they said. The slugs continued on their merry way. The man died.
The moral of the story: Look down before you walk. Oh, and slugs are heartless beings.