엄친아 / 엄친딸 – Someone who is good at everything

Short for 엄마친

구의 아들 (my mom’s friend’s son) or 엄마친구의 딸 (my mom’s friend’s daughter), these phrases are used to describe “the perfect child” or someone who is good at everything. It originates from the fact that Korean parents like to talk to their children about how “so and so’s” son or daughter did so well on his/her tests, got into a great school or just got a new job at a big company.