Watch this clip from Stand Up To Cancer, set to be broadcast on Channel 4 on Friday night, that features comedian John Bishop and Manchester United manager José Mourinho trying to make each other laugh with bad jokes.

The teaser from the upcoming charity extravaganza sees the pair read old jokes to each other, trying not to laugh in the process.

In the video, a giggling Mourinho is finally defeated as he struggles to cope with the concept of a sheep with no legs included in one of the jokes he was telling.

Watch the trailer for the ‘bad joke battle’ between Bishop and Mourinho in full above.