The 'naughty ooh' belongs to the stock library of audience sweetening used by multi-camera kids' sitcoms on Disney Channel and Nickelodeon, where a live or canned crowd reacts whenever a character says something cheeky or gets caught mid-mischief. Editors lifted these tiny reaction stings onto soundboards and meme pages, and the ooh became shorthand for playful disapproval far beyond television. It endures because almost anyone raised on those shows recognizes it instantly, and a single second of it can frame a clip as harmless fun rather than real trouble.