Last night David Letterman gave his guest Justin Bieber a bit of a hard time about his new tattoo. And by "gave him a bit of a hard time," I mean, "Letterman yanked Bieber's newly inked arm and gave him a firm scolding." In celebration of his new album release, Bieber got "Believe" tattooed on his upper forearm. Letterman had plenty to say about the young singer's image, and it definitely was not that he liked his taste in tattoos. Check out the awkward video yourself.