Justin Bieber participated in the Spill Your Guts or Fill Your Guts segment on The Late Late Show with James Corden.When asked to either eat a bull penis or rank wife Hailey Bieber's supermodel friends from "favorite to least favorite," Bieber chose to rank, subsequently placing Cara Delevingne last.Delevingne responded in a now-deleted Instagram post.When are men going to learn that sometimes it's better if you just shut up and eat a bull penis? Cara Delevingne tried to teach Justin Bieber this