British singer Amy Winehouse has confessed to once harming herself when she was younger. The REHAB star, who was recently pictured with marks on her arm leading to speculation of self-harming, admits her "morbid curiosity" got the better of her. She says, "It's a funny thing, a morbid curiosity. I'm talking about when I was nine. What does that feel like? 'Ow, that f**king hurt.' "It's probably the worst thing I've ever done." And Winehouse also tells the upcoming issue of British magazine Q, that she has hit herself during a bout of depression. She adds, "Not punching myself in the face, but slapping. "I drank a whole bottle of champagne and then just got depressed. I didn't feel like I looked good. And I'm quite self-destructive when I'm drunk."