David Letterman and Justin Bieber
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David Letterman noticed something on Justin Bieber’s arm and asked him if he had a new tattoo, to which the pop star said yes. Then Letterman groaned and asked, “Oh, God! How many do you have?” And Bieber awkwardly replied that he had a couple. So, Letterman told him to assure him that this was the last one. And the singer said maybe, but he was very disturbed.