Koseki Bijou, nicknamed Biboo by fans, is a virtual YouTuber with Hololive English's Advent generation, which debuted in 2023. Known for her playful gremlin energy and expressive reactions, she often drops exaggerated disgusted lines like 'ew, stinky' during livestreams and collabs. Fans clipped the moment and spread it through VTuber highlight channels, TikTok edits and meme compilations, where her cutesy delivery turned a simple insult into a reusable reaction. It endures because Hololive clips travel fast and the line fits any gross-out or roasting context.
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Hololive EN VTuber Koseki Bijou says 'ew, stinky' in a disgusted, teasing voice in this clip. Creators play it over gross, smelly or cringe moments in memes.
This seven-second clip captures Hololive English VTuber Koseki Bijou, affectionately called Biboo by fans, delivering her signature disgusted reaction: 'Ew, stinky!' Her voice is high, bright and dripping with playful contempt, stretching the vowels just enough to sell the revulsion without sounding mean. A tiny laugh seems to hide behind the delivery, which keeps it light and memeable rather than genuinely harsh. Dropped into a video, it instantly frames whatever is on screen as something gross or embarrassing, and the cutesy VTuber delivery makes the insult land as comedy instead of cruelty.