Watch: Mourinho giggles way to loss in bad joke battle

What do you call a sheep with no legs?

That was the set-up to a joke that cost Jose Mourinho recently when he took part in a bad joke battle for charity.

The Manchester United boss went head-to-head with British comedian - and Liverpool fan - John Bishop as the pair attempted to make the other laugh with a series of bad jokes as part of the BBC's "Stand Up To Cancer" broadcast.

Bishop started with this doozy: "Why was the big cat disqualified from the race? Because it was a cheetah."

But, later in the game, before he could deliver the punchline, the Portuguese gaffer broke out laughing as he attempted his joke.

The answer, by the way, is a cloud.