Definitions by Bonfou

Go back 

A phrase common on various imageboards, especially the Chan boards.
The phrase is used to imply that someone is simply a tourist from Reddit-- which the Chan boards specifically despise-- and therefore must "go back" as they are not a part of this community.

Anon 1: "Wanna see my dank memes?"
Anon 2: "You have to go back"

Go back by Bonfou November 5, 2020

Rent Free

An insult commonly used on various 4Chan boards.
It insinuates that the person being insulted lives "rent free" with his or her parents, and thus must be a NEET with no life.
Note that when used, insults like this will often either completely shut down an argument or turn it into a rapid back-and-forth flame war, derailing it.

Anon 1: "Wow, that shit was cringe"
Anon 2: "Rent free"

Rent Free by Bonfou November 5, 2020