Woody Woodpecker first appeared in the 1940 cartoon Knock Knock and quickly became known for his distinctive, manic laugh, which became his trademark across decades of animated shorts and television reruns. In Brazil, where the character is known as Pica-Pau, that laugh became especially recognisable and later travelled online as a short reaction clip shared in memes, WhatsApp audios and funny edits. Its short length and instantly cartoonish tone keep it useful as a quick punchline for mischief and chaos.