Oh Long Johnson comes from a home video of a talking cat that spread widely on YouTube in the mid 2000s, long before short form apps made animal clips everyday memes. Viewers replayed it because the cat's natural vocalisations sounded remarkably like the phrases oh long johnson, oh long john and oh Don piano. The clip was quoted, remixed and referenced in television comedy, which kept the sound alive as a nostalgic internet reference. It survives now as a soundboard staple, instantly recognised by people who grew up with early viral videos.