It is a word used in Chile that replaces the word "thing", so it can be used replacing every single noun that exists. It doesn't mean anything wrong but is not a nice way to talk. It is mostly used with people that have the same status or relation.
The actual meaning of the word wea depends of the context of the situation.

It's used in Chile to describe things, it can be replaced by shit.

it replaces every noun when used.

just short for we are or where

Do you know the wea?

the wea is described by Uganda knuckles as, the way. the way towards something nobody knows.
theories suggest Uganda Knuckles talks about the wea to the queen. but he clearly said "YOU DO NOT KNOW THE WEA"

The best person you could ever meet! Selfless, caring, loving, amazing.. awesome! Shes got her own styl and does things in her own weird way. Shes the best!

1. To get over the top drunk, fuck up, then pass out. After all of this occurs the person pulling the Weas will then become semi-conscious, piss themselves, and promptly return to floor.