문토불이in English:a person who is overly focused on their own interests or desires, often disregarding others

Examples
with 문토불이.

• 그는 문토불이여서 다른 사람의 의견을 전혀 듣지 않아요.geuneun muntoburiyeoseo dareun saram-ui uigyeon-eul jeonhyeo deudji anayo.He is so self-centered that he doesn't listen to anyone else's opinions.