Woody Woodpecker first appeared in the 1940 Walter Lantz cartoon Knock Knock, and his manic laugh quickly became the character's signature sound. Originally performed by Mel Blanc, the laugh was later refined by other voice actors as the series moved from theatrical shorts to television. Clips of the cackle spread online through cartoon compilations and meme edits, where its unmistakable rhythm made it a shorthand for mischievous laughter. It remains widely used because few cartoon laughs are as distinctive or instantly nostalgic.