The Daleks are one of the best-known villains from Doctor Who, the long-running British TV series, and their command “Exterminate” became a defining catchphrase for the characters. The voice effect and delivery made it easy to recognise even in very short clips. Online, the sound spread through fan edits, reaction memes and sci-fi joke videos because it instantly signals robotic hostility while still feeling campy and fun. It remains popular thanks to how quickly viewers connect the line with Doctor Who and classic TV sci-fi.