Jon Hamm is pretty over all of this Hammaconda talk, it seems. The actor would rather eat a bull’s testicle (literally!) than disclose exactly how big it actually is.

Hamm found himself playing Spill Your Guts Or Fill Your Guts with talk show host James Corden recently, where guests are asked uncomfortable questions and will either answer, or eat/drink something naaaaasty! And we’re talking worse than Russel Brand’s body fluids.

Corden – around the 12:00 mark – broaches the subject of Jon’s Hammaconda which has been subject to internet gossip for years; asking him to give a hand gesture to represent its size.

Turns out Hamm would rather remain a man of mystery. Well, except for when he leaves the house going commando. Or talking about it.