Caleb City built a large audience with fast, self-acted comedy skits first on Vine and then on YouTube, playing every character himself. His exaggerated reactions and sung taunts became easy sounds to lift for memes, and this na na na clip is used the same way as his other catchphrases. The joke does not need context from a full sketch, because the melody itself signals teasing in almost any language. Editors keep reusing it for win moments, failed chases, and smug replies where words would slow the punchline down.