An engineer dies and reports to the pearly gates. St. Peter checks his dossier and says, "Ah, you're an engineer -- you're in the wrong place."
So the engineer reports to the gates of hell and is admitted.
Pretty soon, the engineer gets dissatisfied with the level of comfort in hell, and, as is the wont for engineers, starts designing and building improvements.
After a while, they've got air conditioning and flush toilets and escalators, and the engineer is a pretty popular guy.
One day God calls Satan up on the telephone and asks, "So how's it going down there in hell?"
Satan replies, "Hey things are going great. We've got air conditioning, flushing toilets and working escalators, and there's no telling what an engineer is going to come up with next."
God replies, "You've got an engineer? That's a mistake -- he should never have gotten down there; send him up here."
Satan says, "No way. I like having an engineer on the staff, and I'm keeping him."
God says, "Send him back up here or I'll sue."
Satan laughs uproariously and answers, "Yeah right. And where are you going to get a lawyer?"