Answer:
Railroad crossing without and cars can you spell that without any R's
How can you place a pencil on the floor so that no one can jump over it?
Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?
An archaeologist digs up two perfectly preserved bodies. He immediately identifies them as Adam and Eve. How can he tell they are Adam and Eve?
What is yours but only used by others?
If a rooster lays an egg on the exact peak of a barn, which side does it fall?