Riddle: You are a dectective assigned to a case of a mysterious suicide. The man who commited suicide did it in his studio apartment in the middle of the living room with a rope hanging on the ceiling fan and a puddle of water beneath him. The apartment is bare with no furniture, no chairs, stools, ladders, whatsoever. He couldn't have climbed the window because he is in the center of the apartment.The question is how did get hang himself?
Answer: The puddle beneath him: it was a block of ice and then melted.