How rude became famous as the catchphrase of Stephanie Tanner, played by Jodie Sweetin, on the American sitcom Full House, which originally aired from 1987 to 1995. Stephanie used the line whenever another character said or did something she found impolite, and its bratty, indignant delivery made it one of the show's most quoted moments. Reruns and later nostalgia for the series kept the phrase alive, and short clips of the line spread online as a reaction sound for rude, awkward or surprising moments, which is why creators still reach for it today.