Jokes & English

The sense of humour is a characteristic trait of inteligent people. Let's test you intelligence and humour then. Look at the pictures and try to explain the following jokes.

 What's the meaning of put your finger on it?
What's the spanish expression?

 What's the meaning of sleep on it?
What's the spanish expression?

 what's the meaning of take a stab at it?
Stab means....

What's the meaning of steal someone's thunder?
Thunder means....