The phrase is Polish, with przestan meaning stop it, which explains why the clip travels as a reaction even among viewers who do not speak the language. It circulates on user generated soundboards and in short form edits, where brief foreign language voice lines often become reusable punchlines. Its appeal comes from the frustrated delivery rather than a known film or show source, and editors keep reposting it under its original wording, so searches usually use the exact phrase instead of a translation.