You may have heard the term “BernieBro” being thrown around on Facebook and Twitter lately, usually during discussions about the candidacy of Vermont Senator Bernie Sanders. Robinson Meyer of The Atlantic invented the term late last year, in an article describing what he saw as a collection of conversational and argumentative tics frequently exhibited by Sanders’ supporters (“The Berniebro talks a lot about DC insiders”; “The Berniebro knows the media is complicit in keeping Clinton the Democratic front-runner”) but he didn’t settle on a concrete definition. So what is a BernieBro? Language is a malleable thing, so for now we’ll defer to the definitions laid down by other outlets. Here’s what we know about the BernieBro so far: