There are thousands words and phrases in Korean. But you know, only uneducated person or teenagers speak them out.
I'll write other words instead of them.
너나 잘하세요. (that is famous because of famous movie.... that means "don't bother me, if you have time, concentrate on yourself instead of me)
그래 너 잘났다! ( that means, "yes, you are better than me". You know... everyone feel ashamed when he/she hear it)
참나, 별꼴이야 정말. (hmmmmm, this is difficult... especially in English...., that means, "what a strange/ weird/ (guy)!" ... we say it when we are not satisfied with someone)