Bouji adj. 1: Abbreviation for the term bourgeoisie, which in laymen terms means stuck up, snobbish, or just thinking your better than others because of your economic status. 2: Refers to anything or anyone that could be described as being expensive just to be expensive.
This word is usually used to describe a peer that is trying to act like they are richer, and therefore more important, than their peers (even if that is not the case). Basically, kids use this word to make fun of someone that is trying to look nice. It is usually meant to refer to someone or something that is fake or pretentious. It’s not usually a great thing to say about someone.