The clip comes from Russian meme edits built around Mater from Pixar's animated film Cars, known in Russian as Tachki. In those edits the short phrase cho za is used as Mater's startled reaction, and the contrast between the familiar cartoon character and the blunt slang line helped it circulate as a standalone sound. Russian speaking users shared it on soundboards and in short videos, where it became a quick shorthand for confusion. Its brevity keeps it popular for reaction edits far beyond the original Cars context.