An engineer died. He was taken to heaven. However, later on, it was realized that there was a mistake and he would have to be sent to hell.
Engineer was not happy with the living condition of hell. He started working on infrastructure. He erected great buildings, installed ACs in rooms, water supply, hygiene, and life in hell became really exciting.
One day, St Peter called up Satan and asked how life was going on in hell. Satan: "Hey, things are going great. We've got air conditioning and flush toilets and escalators, and there's no telling what this engineer is going to come up with next."
St Peter said, "What? You've got an engineer? That's a mistake. He should never have gotten down there; send him up here."
Satan: "What nonsense." I like having an engineer on the staff, and I'm keeping him."
St Peter said, "Satan, you have to understand that, send him to heaven or I will sue you"
Satan laughed uproariously and replied, "We have all the lawyers here!"