Answer:
How can you place a pencil on the floor so that no one can jump over it?
What is the only question you can't answer yes to?
The yellow house has yellow window, the red house has red windows, what colour windows does the green house have?
What is the building that you leave without ever having entered.
I have two coins, one is marked George I and one is marked George IV. One is genuine but one is a forgery. Which is the forgery?
What is round, has a twin, and sees more than most?