The "Y U No" meme originated from the popular rage comic series of the early 2010s, with the distinctive face adapted from a character in the Japanese manga Gantz. This classic meme features a character with an angry, scrunched-up expression and outstretched hands, conveying a sense of frustration and demand. Its core meaning lies in questioning why something obvious, expected, or desired isn't happening. Users typically employ the meme in the format "Y U NO [verb/action]?", to express impatience, exasperation, or a direct plea for an action to be taken, or a situation to change. It's a versatile meme for highlighting a perceived absurdity or oversight.