Korean expressions from movie [On Your Wedding Day]

Korean expression in the movie [On Your Wedding Day], which chronicles the first love of two people whose timing is not right. - I assumed you forgot about me since you haven't contacted me for a while. (하도 연락이 없길래 그냥 잊었나 보다 그랬지.) - How can I forget you? Whenever I take the bus, it keeps saying 'transfer', 'transfer'. (어떻게 잊냐? 버스만 타면 환승입니다. 환승입니다. 그러는데.) - I assumed that maybe you were sleeping in a toilet while drunk, and then your facial muscles got paralyzed. (your mouth turned) (어디 뒷간에서 자다가 입 돌아 가는 건 아닌가.)