The E sound became popular online as a tiny, standalone reaction clip shared in meme edits, short videos, and soundboards. Its appeal comes from how little setup it needs: one quick vocal hit can instantly derail a normal scene into something surreal. The sound is still widely used because it fits many formats, from reaction memes to low-effort shitpost edits, and it remains easy to recognize even when remixed, bass boosted, or paired with a shocked sound for extra emphasis.