ICYMI: Jimmy Fallon, Ashton Kutcher, Liam Payne Play 'Secret Ingredient'ICYMI: Jimmy Fallon, Ashton Kutcher, Liam Payne Play 'Secret Ingredient'Jimmy Fallon wants to make you laugh 'til your stomach hurts. Well, he found a gross way to make his own belly writhe in pain.Drew WeisholtzDrew Weisholtz