Watch: James Corden Eats Calf Brain To Avoid Answering This Question

James Corden has figured out the secret to getting even the most private A-list celebrities to reveal their deepest, darkest secrets on national television: threatening to make them consume the world's most disgusting foods and drinks!

Corden hosted Bad Moms co-stars Mila Kunis and Christina Applegate on his show last night, where they played the Spill Your Guts game.

When faced with drinking some clam juice, Mila chose to say whether husband Ashton Kutcher's manhood is more like a "carrot stick" or a "beer can." 

Don't worry, the girls got Corden back with "Which was your least favourite Carpool?"

The late-show host clearly didn't want to reveal the answer, so he resorted to eating CALF BRAIN! 

Watch the hilarious moments unfold above.