Klasky Csupo was the American animation studio behind Rugrats and other Nickelodeon cartoons, and its production logo closed out episodes on television throughout the late 1990s and 2000s. As old episodes circulated online, the brief logo sting became a familiar piece of childhood television for a generation of viewers. It later spread through YouTube logo compilations, scary logo videos and meme edits, where its abrupt finish made it easy to reuse as a punchline. That mix of nostalgia and odd, memorable timing keeps it in circulation today.