Never. My lips are alright; plus I don't like the idea of plastic surgery, or any type of aesthetic enhancement procedure for vanity (I don't care if others choose to have this type of thing done, it's just not for me).
they really dont look that good on male faces but I'd like a subtle plump I have no top lip lol i feel people that cosmetic surgery always say they want something subtle then end up going crazy and becoming a walking barbie