Words nobody has EVER heard off!!!

Ok the other day I heard one of my body use this word: JANK EXAMPLE: I was at this party and that JANK was off the chain. Now i know i am not the smartest person in the world. But doesn't that sound little ignorant. I mean not to play my boy or nothing he is right behind me and class ranking and everything but it really didn't sound right. IF YOU GOT SOME WORDS YOU HEARD BEFORE THAT DON'T CLICK RIGHT LET US HEAR SOME. AND PLEASE EXPLAIN THEM!!!

Since I been at morgan there are a lot of people from PG and DC so this is what i've picked up Yun'= kinda like yo U blowin me= u got me trippin Ji= ex. u ji weak means u real weak carry=insulting somebody ex. she carried the sh*t outta him rolla= a hoe ex. yo she a rolla roast= tryin to play somebody ex. yo, u tryin to roast me? Also I've noticed that people also say joint after everything (i.e that joint was straight) If i think of somethin else, i'll post it