In the 4th episode of 'The Froth’, Off Menu's Ed Gamble is the special guest. Rhod and Sian try to work out how to make the world’s biggest chip, with help from comedian and co-host of Probably Science, Matt Kirshen; there’s mystery dung on the wedding dance floor, and Rhod calls a pest controller after a rat tried to climb up Sian’s bottom.   See acast.com/privacy for privacy and opt-out information.