Riddle: What is made of wood but no saw on earth is sharp enough to cut?
Answer: Sawdust.
Riddle: I have one,you have one,we all have one,but I willl use yours more than mine. What is it?
Answer: your name.
Riddle: I can run but cannot walk, everywhere you go I am already there. What am I?
Answer: Your nose.
Riddle: I am strong enough to smash ships, but I fear the Sun. What am I?
Answer: Ice.
Riddle: I went to Australia but I am still at my home. How did I go?
Answer: In my dreams.
Riddle: There is an apple 26 feet away from the horse. The chain is 24 feet long. How will the horse get to the apple?
Answer: Easy, just walk there. The chain isn't tied to anything.
Riddle: Does a ton of feathers or a ton of bricks weigh more?
Answer: They both weigh a ton.  
Riddle: What language do chimpanzees speak?
Answer: Chimp-anese.
Riddle: What house can fly?
Answer: Housefly.
Riddle: What do you call pigs that write letters to each other?
Answer: Pen Pals.