Funny Riddles

Question: If a white house is white and a yellow house is yellow, what color is a green house?

Question: What is the only question you can't answer yes to?

Question: A man wants to buy a used car. He finds a beautiful Buick for $9500, but he buys it without paying a dime.

How did he manage this?

Question: Which comes first, chicken or egg?

Question: What is the coolest letter in the alphabet?