Otóż nie is a common Polish expression that translates roughly as well, no or actually, no, and it is used to correct someone politely but firmly. The exact recording behind this clip is not widely documented, so it is best understood as a user-shared reaction sound rather than a line from a known film or show. On soundboards and in short-form edits, Polish-speaking creators use it as a quick, language-specific alternative to English denial sounds, which helps it stand out in videos, streams and chats where a brief, recognisable correction is needed.