Don't you think I am that easy(you에 강세) Do I look like I am easy?내가 만만하게 보여?

He deserves it.그 사람 그거 참 잘~됐다 (그게 당연하다, 그런 대접을 받을만하다)

Thanks for the history lesson.

None of your business.= mind your own business.= stay out of my business.= Don't poke your nose into my affairs. *poke your nose into sth : ~에 참견하다

Did you get a good night's sleep?= Did you sleep tight? * sleep tight : 잘 자다

It won't hurt to do your best. * It won't / wouldn't hurt (so / sth) (to do sth)(~해서) 나쁠 것 없다. (손해볼 것 없다)