Our list of regrettable ink starts with Adrienne Bailon. The host of The Real, who has a "ratchet" tattoo of her ex-boyfriend Rob Kardashian's name on her rear, admits, "I didn't know what I was thinking." When the relationship ended (badly) in 2009, Bailon got to work on having the ink removed. "It does not feel good," she explains. "You can smell your flesh burning." Yikes.