People might think James Corden keeps things light and fluffy on the Late Late Show but last night he was asking the questions we ALL want the answers to.

The handsome Jon Hamm stopped by the late night show to promote his new movie Bad Times At The El Royale when Corden challenged him to a game of “Spill Your Guts Or Fill Your Guts.” The rules to the game are simple: answer a tough question or eat something horrifyingly gross. While all the questions asked were intriguing, Corden finally asked the burning question fans have been dying to know. Corden asked Hamm to use his hands to show just how big his legendary “Hammaconda” is. Corden was quick to point out that his mother was in the audience and she was perhaps the most curious about the answer. Sadly, Hamm opted to eat bull penis rather than divulge the size of his own. Sigh.

Take a look at the hilarious clip below!

Late Late Show with James Corden airs weeknights at 12:35am on CBS.