Shane Hannon from Off The Ball joined Kieran on The Hard Shoulder to confirm or rubbish another one of the most popular myths and truths out there.
So far, they've looked at topics including the Guinness diet, whether yawning is contagious, the 5-second rule for food and cows walking down stairs.
This week, Shane asked the question; does leaving your hand in warm water really make you pee?
