"Flex" is the third single from British rapper Dizzee Rascal's third studio album Maths + English, and ninth overall.

The video is set in a dream of Dizzee Rascal's after he falls asleep while watching TV, bored of the programs on it.

It features Reggie Yates as one of the three judges along with a woman and Dizzee Rascal.

Rapper Mike Skinner of The Streets also features in the video as one of the performers, along with Peterborough United footballer Gabriel Zakuani and magician Dynamo.

Instead of singing as on The X-Factor contestants, including Dizzee, dance on the Flex Factor - but all are considered bad by the judges apart from two girls dressed in black, who end up winning.