11. Why do some old people never use glasses?

　　They must prefer bottles to glasses.

　　12. Why is the person wearing two coats while painting the house?

　　Because the instructions on the paint can say "Put on two coats for best results."

　　13. What two words have thousands of letters in them?

　　Post office.

　　14. What do workers do in a clock factory?

　　They make faces all day.

　　15. What 5-letter word has 6 left when you take 2 letters away?

　　Sixty.

　　16. When do you go as fast as a racing car?

　　When you are in it.

　　17. How many sides does a house have?

　　Two - inside and outside.

　　18. What never asks any questions but always gets answers?

　　A doorbell.

　　19. Where did Columbus stand when he discovered America?

　　On his feet.

　　20. When the boy fell into the water, what's the first thing he did?

　　He got wet first of all.