Avada Kedavra is the killing curse from the Harry Potter series, one of the three Unforgivable Curses, most closely associated with Lord Voldemort and his followers in both the books and the film adaptations. The short, guttural incantation became instantly recognisable to a generation of fans, and short audio rips of the line began circulating on soundboards, forums and meme pages as shorthand for an instant, dramatic elimination. Years after the final film, it endures online because two seconds of that cold delivery can turn any petty argument or gaming fail into a mock execution.