The phrase ne prosto is everyday Russian, literally meaning not simply or not just, and this clip circulates online as a standalone reaction sound rather than as a line tied to a well known film or show. Its popularity comes from that generality, since the same short clip can comment on a failed plan, a complicated relationship, or a game moment that turns difficult. Short Russian phrases like this travel easily on soundboards and in edits because the tone is understandable even to viewers who do not speak the language.