Answer:
What is the difference between yesterday and tomorrow?
How can you throw a ball 20 meters, and have it come back to you without hitting anything?
When is homework not homework?
The yellow house has yellow window, the red house has red windows, what colour windows does the green house have?
Why can't Kevin, who is now living in Canada, not be buried in the USA?
A red house is made out of red bricks. A blue house is made out of blue bricks. What is a green house made out of?