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...