John Hartson leads audience on Craig Doyle show in checking themselves for testicular cancer.

John Hartson made an eventful appearance on the Craig Doyle Show on Thursday night.

First of all he declared that Andy Carroll isn't good enough to lace his boots and then led the show panel and men of the audience in checking themselves for testicular cancer, live on air.

Surely the most memorable thing that has ever happened on the Craig Doyle Show.