Buzina is Portuguese for a car horn or buzzer, and caga caga imitates its harsh repeated blast in Brazilian internet slang. The clip circulated on soundboards and in WhatsApp groups as a short, shareable prank audio rather than as a scene from a film or show. Its appeal is its brevity and recognisable rhythm, which makes it easy to drop into edits without explanation. It remains popular alongside other crude meme horns because two seconds is enough to startle, annoy and amuse at the same time.