Chadding is when somebody talks about a category of people in order to imply that they are a member of this category without explicitly saying so. They often do this by
defending this category against some sort of attack, imagined or
otherwise. For example, somebody will react angrily to some low profile Twitter comment and leap to the defence of the criticised group purely so people will
associate them with it. Derived from the incel community's word for an in-group male, "chad".
Guy 1: You know, with all these new rules it's just
impossible to be a man these days! Guys are just not able to be
masculine anymore.
Guy 2: Dude, are you chadding right now? Cause no-one thinks you're even remotely
masculine.