Silly 20
Waiter, this soup tastes funny?Then why aren't you laughing!
What do you get if you cross a US President with a shark?
Jaws Washington!
Why is it not safe to sleep on trains?
Because they run over sleepers!
Why do you keep doing the backstroke?
I've just had lunch and don't want to swim on a full stomach!
How do we know that Joan of Arc was French?
She was maid in France!
Who invented underground tunnels?
A mole!
Why did the clock get sick?
It was run down!