A person who is an egotistical bastard. They constantly brag about their minor achievements and can't help trying to steal other people's content. They also think they are everyone's friend, but really no one likes them. Also, any words that rhyme with Kor are very triggering.
Ugh that kor over there is bragging again about his undefeated debate team gain.
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"