The clip circulates as a Japanese internet meme associated with Hikakin, one of Japan's best-known YouTubers, and with fan-made Hikakin meme compilations that collect his most quotable, often cheeky moments. The phrase itself is built from nupu nupu, a playful Japanese sound word for a soft, squishing movement, turned here into a teasing spoken gag. Because it is so short and rhythmically distinctive, it travels well between soundboards, short videos and streams, where fans reuse it as shorthand for mischievous innuendo without needing any explanation.
關於此聲音
The Nupunupu Shiteru clip is a short Japanese meme from Hikakin fan edits, used in funny videos to add a silly, suggestive slipping sound effect.
This is a short, playful Japanese vocal clip built around the repeated onomatopoeia nupu nupu, spoken in a light, teasing tone that sounds soft, squelchy and deliberately silly. The phrase suggests a slippery, squishing motion, which is why it works as cheeky innuendo in meme edits rather than a literal description. At just under a second long, it is almost absurdly brief, yet that brevity makes it easy to loop or drop over a reaction shot as a punchline. For viewers who know the Hikakin fan meme context, it instantly signals mischief; for everyone else, its strange rhythm is funny precisely because it sounds so odd out of context.
