Karen

A Karen is typically a middle age women, with a short pixie haircut, who complains loudly and obnoxiously on the internet for being called Karen. They want to speak to the manager. It could also refer to anyone that creates drama over something that's unnecessary, and trivial. Members of the gay community often refer to drama queens as "Karens".

OMG, Lucy is such a Karen! She complained quite loudly and obnoxiously all night that she wasn't being served her food immediately in a busy restaurant. She asked to speak to the manager.