Answer:
The yellow house has yellow window, the red house has red windows, what colour windows does the green house have?
How could all of your cousins have an aunt who is not your aunt?
If a rooster lays an egg on the exact peak of a barn, which side does it fall?
Two fathers and two sons are in a car, yet there are only three people in the car. How is this possible?
How do you make the number one disappear by adding to it?
What goes around and around the wood, but never goes into the wood?