material for teaching language funny riddles

FUNNY RIDDLES
If you have it, you want to share it. If you share it, you don't have it. What is it?
A secret.
The more you have of it, the less you see. What is it?
Darkness
What gets whiter the dirtier that it gets?
A chalkboard
What has to be broken before it can be used?
An egg.
What goes up and never comes down?
Your age.
What has feet and legs, and nothing else?
Stockings
What had happened?
A father asked his daughter to buy a few things for a holiday. On the table there was an envelope with money in it. The daughter went to the table and noticed that the number 98 was written on the envelope. She took the money and went to the shop. The things she wanted to buy come to 90 man.. At the checkout she found out that she was missing 4 man. What had happened?