Wikipedia
Boseulachi
Boseulachi, occasionally spelled boslachi, is a South Korean insult formed from the words boji "vagina") and byoseulachi (벼슬아치 "bureaucrat"). The word boseulachi emerged in 2006 on South Korean internet forums as a term South Korean men use to describe vain and egoistical women. It is ordinarily directed towards a girl or woman with an aggressive personality.
A related expression is Doenjang Girl. A Doenjang Girl seeks luxury and is vain and proud.