Fenda da Sunga circulates mainly as a Portuguese meme sound on soundboard and short-video communities, where users search for it by its exact title rather than by a film, song or creator name. Its appeal is tied to Brazilian internet humour, with the phrase itself doing most of the comic work in edits, reaction clips and chat shares. Because the clip is easy to recognise and easy to drop into a scene, it keeps resurfacing whenever a creator needs a playful, slightly risqué punchline, even without a single well-known source behind it.