"That's all, folks!" closed Looney Tunes and Merrie Melodies cartoons for decades, first appearing in the 1930s when producer Leon Schlesinger adopted it as a sign-off. Porky Pig, voiced by Mel Blanc, made it immortal with his famous stutter, usually delivered over the show's red-and-blue concentric circle end card; Bugs Bunny occasionally took the line in his own cartoons. Because the shorts played endlessly on television for generations, the phrase entered pop culture as the universal shorthand for a comedic ending, and editors still use it to signal that the show is over.