Taeksu has left a really good comment. I just want to mention about "에라이".

Kim explained it as the same words like 'shit' or 'damn'. But I think it is a bit too aggressive meanings for 에라이.

It doesn't have a meaning itself, but whenever you see or hear something absurd or stupid you can say that showing you dont take it seriously. Let me give you some example.

A: 브라질에 가면 여자들이 다 지젤번천 같대.

B: 에라이, 말도안되는 소리 좀 하지마.

엔간히 좀 해라. it's like a slang words. it's mean Don't go overboard, 적당히 해라.

에라이 is like Shit or Damn

거리에서 핀 한 쌍의 더러운 개나리

a fair of dirty forsythia of blooming on the street

에서 on /거리 street /핀 blooming /한쌍 a fair/ 의 of /더러운 dirty/ 개나리 forsythia

개나리's pronunciation is a little similar to swear. it's like malapropism.