Not many people realize that heaven and hell are directly adjacent to one another, and once upon a time there was nothing separating them. People would sneak across the border from hell into heaven and cause all sorts of mischief there.
One day God and the Devil god got together and agreed that this situation was bad for both of them. God offered to build a fence between heaven and hell if the Devil would take turns with Him repairing it when repairs were needed.
After a few eons, the fence fell into disrepair and, just to show He was a good sport, God took the first turn and repaired it, as good as new.
A few eons later, the fence fell itno disrepair again. God rang up the Devil and reminded him that it was his turn to fix the fence. "Very well," said the Devil, but nothing happened. A few weeks later, God noticed that nothing had been done about the fence and he called up the Devil again, rather annoyed. "Look," He said, "It's your turn to fix the fence but you haven't done anything. I expect you to repeair it right away." "Very well," said the Devil again, and again he did nothing.
A few more weeks went by and now God was really pissed. He called up the Devil and said, "I've reminded you twice but you're still not holding up your end of our bargain. If you don't fix that fence immediately I'm going to sue you!"
And the Devil answered, "Oh, yeah? Where are you gonna get a lawyer