Justin Bieber makes James Corden reveal how much he regrets being in 'Cats'

Give Justin Bieber a Pulitzer for this, the most hard-hitting interview of the year so far.

During the regular Late Late Show truth-or-icky-dare segment "Spill Your Guts Or Fill Your Guts" Bieber (or at least the producer who handed him the card) hit host James Corden with a tough question: on a scale of one to 10, how much does he regret doing Cats?

As always, it's hard to know whether this question is genuinely a surprise to Corden, but he thinks about it hard, briefly considers opting to eat some cod sperm instead, then answers, it seems, truthfully. The number he gives is diplomatic, but his grimacing, umm-ing and aah-ing tells the real story.

Also in this segment, Corden takes a massive chomp out of a cow tongue rather than rank his fellow late night hosts, Bieber risks sleeping on the couch by ranking his wife's girlfriends, and Corden makes Bieber choose between shaving his mustache and eating a scorpion. His answer may surprise you, especially if you've seen that mustache.