The phrase comes from Spanish slang, where le saben means someone knows what they are doing, so no le saben flips it into a tease for someone who does not. As an audio clip, it has circulated online as a reaction sound for Spanish-speaking creators, especially in short videos, gaming moments and comedy skits where a judgement works better than a caption. Its appeal is its brevity and attitude: six seconds is enough to call out a mistake without stopping the video, and the slang makes it easy to reuse across many jokes.