So, the man opened the first door and saw a room full of people, standing on their heads on a concrete floor. Not very nice, he thought.
Opening the second door, he saw a room full of people standing on their heads on a wooden floor. Better, he thought, but best to check the last door.
Upon opening the last door, he saw a room full of people, standing waist-deep in excrement and sipping coffee.
"Of the three, this one looks best," he said and waded in to get something to drink while Satan closed the door.
A few minutes later the door opened, Satan stuck his head in and said, "Ok, coffee break's over, back on your heads!"