The phrase comes from Russian everyday speech and circulates online in its transliterated form u tebia bolezn, which helps non Russian speakers search for and reuse it. Its exact original recording source is not widely documented, so it spread mainly through reposts, soundboards and short video edits rather than a single famous scene. Creators keep using it because the delivery is instantly readable even without translation, and the exaggerated accusation fits reaction memes, gaming clips and chat jokes about strange behaviour.