A male crab met a female crab and asked her to marry him. She noticed that he
walked straight instead of sideways. Wow! she thought. This crab is really
special. I can't let him get away. So they married immediately.
The next day she was dismayed to notice her husband walking sideways like all
the other crabs. "What's happened?" she sobbed. "You used to walk straight before we
married." "Oh, darling," he said, "I can't drink that much every day."