An inconsiderate, extremely annoying person, who either owns and rides a Harley, or grifts people online for right-wing political culture war purposes.
Typically, Fags often consider themselves and present themselves as the coolest shit on the block. They either do this by riding their Harleys really loudly to get attention from passers by, or by presenting themselves as fans of a certain piece of media. Of course, the moment they open their mouths or perform their stunts, they expose themselves as spiteful douchebags who ruin everyone's day despite attracting fellow, similarly dim-witted people to join their gang. Common warning signs include taking stuff out of context for the Culture Warrior kind, or loud motorcycle noises for the Harley Rider kind.
Eric Cartman: You do realise that everyone thinks you're total Fags, right?
Biker: What did you say?
Eric Cartman: You know, when people like you drive down the street with your unnecessarily loud motorcycles thinking you're all cool, everyone is laughing at you and calling you pathetic faggots. You do realise this, right?
Biker: Hey man! We roll how we roll! And if people are annoyed or intimidated by it, that's too bad for THEM!
Eric Cartman: No, no, no. Nobody's intimidated. Everyone realizes that those who are so needy for attention they need to dress up and be as loud as possible are YOU GUYS, and sixteen year old girls. Just wanted to let you know: You're Fucking Fags.
Biker: Th-that little kid called us "Fags!"