An engineer dies and reports to the Pearly Gates. Saint Peter checks his dossier and says, "You're an engineer you're in the wrong place."
So the engineer reports to the Gates of Hell and is welcomed. Soon, the engineer becomes rather dissatisfied with the level of comfort in Hell; he begins to design and build improvements. Shortly thereafter, Hell has air conditioning, flush toilets, and escalators. Needless to say, the engineer is a pretty popular guy.
One day, God calls Satan and says, "So, how are things in Hell?"
Satan replies, "Hey, things are going great. We've got air conditioning, flush toilets, and escalators. And, there's no telling what this engineer is going to come up with next."
"What! You've got an engineer? That's a mistake - he should never have been sent to Hell... send him to me."
"Not a chance! I like having an engineer on the staff, and I'm keeping him!"
God insists, "Send him back or I'll sue."
Satan laughs uproariously and answers, "Yeah, right. And where are you going to get a lawyer?"