Khe khe khe is the written Russian form of a sly he he he laugh, typed in Cyrillic as хе хе хе and transliterated into Latin letters for search and sharing. The clip spread on soundboards as a short reaction sound, detached from any single show or creator, and is now used mainly as a short spoken reaction online. Its popularity comes from how clearly it reads as teasing laughter in chats and edits across languages, making it a quick shorthand for quiet amusement at someone else's expense in memes.