My submission for the PITA award:
Q: On which side does a chicken have the most feathers?
A: The outside.
Q: How do you know when there is an elephant under your bed?
A: Your nose touches the ceiling.
Q: What's a flea's favorite way to travel?
A: Itch-hiking.
Q: What do you get if you cross an elephant and a kangaroo?
A: Big holes all over Australia!