The ahooga horn comes from the hand-squeezed bulb horns fitted to early automobiles, where its loud oo-gah warned pedestrians. Vaudeville and slapstick comedians adopted it as an audible punchline for lecherous glances and bad decisions, and cartoons cemented it as shorthand for comic alarm. Online it thrives in meme edits and short videos as a louder, sillier alternative to the classic rimshot or a sudden dramatic sting, because one blast instantly frames any entrance or fail as a joke.