One day an engineer finds himself at the gates of hell. The Devil takes a look at him and says, "Well, we've never had an engineer in hell before, but I guess we can take you in." The engineer goes in.
After a few days, he comes up to the Devil and says, "I'm sure you've noticed, but it's really hot down here! What do you think of setting up a couple of refrigeration coils, getting an icebox set up so we could have iced drinks down here?"
The Devil hears this and says, "Why not? If you can set it up, go for it!"
The engineer gets some tools together, works for a little bit, and sets up his little ice cube maker, and soon the engineer, the Devil, and everyone else is enjoying ice cubes in their drinks, and everyone thinks it's a great improvement.
A couple of days later, the engineer comes back to the Devil and says, "Well, I'm impressed by how big Hell is - there are so many people here! But it takes so long to get from place to place - how about I install some people-movers? I can put in escalators, elevators, moving ramps, the works!"
The Devil takes a sip of his ice cappuccino, and says, "Sure, give it a shot."
As the engineer works, the souls in Hell start getting around easier - there are elevators, escalators, all sorts of people-movers! It gets to be quite convenient to get around Hell.
After that project, the engineer comes up to the Devil and says, "I've been thinking about tackling the heat down here. Ice drinks are all well and good, but it's still bloody hot! How about it?"
The Devil at this point returns, "Anything you need, you got it!"
Two weeks later, the first stage of the cooling system goes on-line, and all the damned souls breath a sigh of relief as the heat wave finally breaks.
At this point, God comes down to talk to the Devil, and tells him there's been a mistake: "That engineer you've got doesn't belong in Hell. He was meant for Heaven!"
The Devil, however, isn't about to let his first engineer go. He returns, "Oh, come on - once he's in those gates, he's mine! That's the way it works, and you know it!"
God tells him, "Well, you're just gonna have to return him! If you don't, I'll sue!"
The Devil smiles and asks, "Now, where are you going to find a lawyer in heaven?"