Riddle: A policeman bursts through the door, and he finds exactly what the caller described. A man is hanging from the ceiling of the house. There was no furniture, no windows and the man was not psychically killed, or poisoned. The only thing the policeman found was a puddle of water. How did the man hang himself?
Answer: He stood on an ice cube to hang himself, which was slow and painful.
Riddle: There was a fat man. He was being chased by zombies. The only way to get away was to cross a rope bridge. The rope bridge could only carry 80kg and the man was 79kg. The fat man had 2 things he needed to carry. Each weighed 1kg. How was he going to get across?
Answer: Juggle the 2 things while getting across.
Riddle: I'm teary-eyed but never cry, silver-tongued, but never lie. double-winged, but never fly, air-cooled, but never dry. What am I?
Answer: Mercury. The element looks shiny, silver, and is wet. The god Mercury has two wings but only uses them to run.
Riddle: How many different types of gnus are there?
Answer: Two.  Good gnus and bad gnus.
Riddle: What exists but no-body can enter and is unreachable in life?
Answer: Heaven.
Riddle: I am free yet priceless, you can't own me but you can use me, you can't keep me but you can spend me. Once you lost me you can never have me back. What am I?
Answer: Time.
Riddle: What room can no one enter?
Answer: A Mushroom.
Riddle: What kind of tree can you carry in your hand?
Answer: A palm tree.
Riddle: If you have me, you want to share me. If you share me, you haven't got me. What am I?
Answer: A Secret.
Riddle: I wear you down, yet you'll mourn me once I fly. You can kill me, but I will never die. What am I?
Answer: Time.