Khikhikhi is the Russian spelling of a hee hee hee giggle, transliterated from Cyrillic as khikhikhi and shared online as a short reaction clip. Its exact source is not documented, so it circulates mainly through meme pages and soundboards rather than a known film or show. Like a baby laughing meme, it works because the laugh itself carries the joke, needing no setup or translation. Creators reuse it across Russian and English speaking communities for teasing, flirting, and light mockery, which keeps the four second clip in regular rotation.