4Fag 

A person obsessed or abusively familiar with the 4chan website. Notably notorious for bashing or insulting everything that is, animate or inanimate. Most commonly a middle-aged, male sex-deprived and unsocial to the atomic level.

"I posted a photograph of a model on the internet, and was immediately raped by a horde of 4fags."

4Fag by ikos August 24, 2008

4-fag 

One who, through browsing 4chan or other related and similar material and have discovered the joys of anonymity, has picked up the unfortunate habit of calling every one else a "fag" of some description. This habit often lures fellow 4-fags into labelling the original 4-fag as a "fag" too, which inevitably leads to one big loop of slandering each other and every one else. Would probably be looked upon as a serious insult by most 4chan followers, due to the similarity in sounds to "fur-fag".

A close variant is 4-tards, here substituting "tard" or "retard" in place of "fag". Others would also claim a third category of "Anoni-fags", which would be those who would use the Anonymous name just to insult some one in much the same way as a 4-fag would.

As a matter of fact, this probably counts as 4-faggotry, just by posting this. Damn...

God, I wish that 4-fag would stop posting those shitty comments on my youtube videos.

4-fag by 404LifeNotFound May 20, 2011