Badminton
There was this group of people on a tour-bus. The guide on the
bus asked if someone on the bus could tell the rest a joke,
whereupon a man got up and said that he could tell a tennis player joke.
Suddenly a bloke in the back of the bus said, "No, don't do that.
I`m a tennis player."
The guide looked at him and said, "That's okay. We'll explain it
to you afterwards."