Woody Woodpecker first appeared in the 1940 Walter Lantz cartoon Knock Knock, and his manic laugh quickly became the character's signature. In Spanish-speaking countries the bird is known as El Pájaro Loco, which is why this clip circulates under that name on soundboards and messaging apps. The laugh was designed to sound wild and taunting, perfect for a character who outsmarts everyone else. Decades later, creators still reuse the recording for reaction videos, edits and jokes where someone gets away with mischief.