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.
Riddle: Peter is 4 and his little brother is 2, half is age. How older will Peter's little brother be when he is 100?
Answer: 98 because there's only 2 year difference.
Riddle: What do you call a singing laptop?
Answer: A Dell.
Riddle: I can soothe you, or drive you nuts. I can be quiet, but also blare in your ears. What does this? Figure that out, and you have found out the riddle.
Answer: Music ( ROCK!!!! or classical)