We couldn't be more revolted by Ke$ha's lip tat if we tried

It's what's on the inside that counts, but Ke$ha's even annoying in there. The brash singer is boasting about her sixth tattoo, which she commissioned this week to ink the expression "SUCK IT!" on the inside of her lower lip. The pop star posted a photo of her oral graffiti on Instagram, exclaiming, "new tatt!!!" She already has five other works of skin art, two of which were homemade etchings created with a safety pin and pen. We're not sure how her dentist will feel about this, though we don't think someone who sings about brushing her teeth with whiskey really cares.