According to Kotaku, a cosmetic surgery known as "liptail surgery" (입꼬리 수술 or "ipkkori") has taken off in South Korea, giving people a permanent duck face look. Historically, the process has been used to undo the natural frowns that aging can cause, giving the edges of one's lips a youthful, upturned look, but it has recently become popular with South Koreans who work in the service industry.