Fun Riddles

Question: Which word does not belong in the following list:

Stop cop mop chop prop shop or crop?

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

Question: There is an ancient invention still used in some parts of the world today that allows people to see through walls.What is it?

Question: What has four legs and can't walk?