Ne Znau is Russian for I don't know, and this short line comes from Escape from Tarkov, the hardcore extraction shooter developed by Battlestate Games. In the game, PMC operators use short Russian and English voice lines to communicate during raids, and players began clipping the most deadpan responses for edits and streams. The phrase works outside the game because its meaning is easy to grasp from context, even for viewers who do not speak Russian. Its calm, evasive tone has kept it useful as a quick reaction in gaming videos and memes.