It's a phrase refreshing the usage of drugs,
It was created by MatPat & StephyPat the game stream YouTuberes from GTLive
It was first mentioned in there episode 1 of the "Life is Strange" gaming serie
1: dude, wanna join me? I'm gonna go getting my chemical on
2: you do drugs?
1: yeah dude
2: ( I don't see a future friendship here)