Answer:
What did one wall say to the other?
What did Sir Lancelot wear to bed?
What did Physics say to History when they are arguing?
What did zero say to eight?
A red drum which sounds without being touched, and grows silent, when it is touched.
Iβm hard as a rock and as light as a feather. Iβm passed on to one another. Poor people need me and rich people have me.