Learning English through Jokes

A young man hired by a supermarket reported for his first day of work.
The supermarket manager greeted him with a smile and a handshake,
and then gave him a brush, saying "Welcome to Smith's Supermarkets.
Here is a brush - your first job is to sweep the floor."

The young man looked amazed and said, "But I'm a university graduate."

The manager then said, "Oh, I'm sorry. I didn't realise that you are
a university graduate. Give me the brush and I'll show you how to do it."