The phrase comes from everyday Russian slang, where mne voobshche, shortened in casual speech to mne vashche, signals that something does not matter to the speaker at all. The clip has no confirmed original source, recording or creator, and it circulates mainly as a short uploaded voice note rather than a scene from a film or show. Online it spread through meme pages and message chats as a quick reaction, in the same family as bruh, used when words are unnecessary and a flat, trailing shrug says everything about the situation.