The clip takes its name from Mellstroy, the online alias of Russian streamer Andrey Burim, whose loud reaction moments are widely clipped and remixed by Russian speaking audiences. The bem bem bem da da net net phrasing spread as a short form meme audio, detached from any longer stream moment and reused as a standalone rhythm. Its brevity helped it travel on TikTok and in chat soundboards, where users trigger it as an instant refusal, a mock drumroll or a nonsense reply that needs no translation to read as funny.