The exact origin of the Mrs. McNeil airhorn is not clearly documented, and the clip circulates mainly as a short user-generated soundboard sound rather than as a widely credited scene or song. Its name comes from the soundboard title itself, which is why it is best recognised by that label in search and in meme edits. Online, the six-second blast has been reused because it is instantly recognisable, easy to drop onto a cut, and loud enough to work without explanation. That simplicity keeps it in rotation for reaction videos, pranks and short-form edits.