구질구질하게 << 구질구질하(다) + 게 구질구질하다 : 상태가 깨끗하지 못하거나 행동이 바르지 못하다. Being in a dirty state or behaving in a wrong manner. 게 : 앞의 말이 뒤에서 가리키는 일의 목적이나 결과, 방식, 정도 등이 됨을 나타내는 연결 어미. A connective ending used when the preceding statement is the purpose, result, method, amount, etc., of something mentioned in the following statement. 굴지마 << 굴(다) + 지 마 굴다 : 어떠한 방법으로 행동하다. To act a certain way. V+지 마(요/세요) Don’t + verb -지 마(요/세요) is the grammatical structure used to tell someone not to do something. Therefore, it can be used only with action verbs. Descriptive verbs should be changed into their action verb form to be used correctly with this structure. -지 마요 and -지 마세요 are both in the standard politeness level, but -지 마세요 is more commonly used. This structure comes from 말다, which means to stop, to give or to quit. So, 구질구질하게 굴지 마 means "Don't behave dirtily; Don't behave in a wrong manner"

https://www.youtube.com/watch?v=QTjf4-_xEqo A video to teach Koreans English https://www.youtube.com/watch?v=FcD560hAyyk I want to you to watch the first half of this video https://www.youtube.com/watch?v=H0dEo8nWIF0 clip of drama 별에서 온 그대