You know, someone sitting next to you in a seat -- that's OK because you're in a theater, but if you were sitting on a park bench and someone came up and sat that close to you, you'd freak out.
극장 안에서는 누가 바로 옆에 앉아도 별 상관 없을 거예요. 하지만, 공원 벤치에 앉아 있는데, 누가 성큼 다가와 곁에 딱 붙어 앉으면 덜컥 겁이 날 겁니다.