Nu vy blin daete is a common Russian colloquial exclamation. Nu vy daete roughly means you people are really something, while blin, literally pancake, works as a mild euphemism for a stronger swear word. Together the phrase expresses stunned disbelief at what someone has just done, whether impressive, foolish or outrageous. Short clips of everyday phrases like this spread easily through chats, gaming streams and short video edits, where a familiar tone matters more than context. It remains popular because it works as a complete reaction in three seconds, understood instantly by Russian speakers.