The rhyme itself, one, two, buckle my shoe, is a long-running traditional counting rhyme for children, which is why the line feels instantly familiar even before the joke lands. The soundboard version leans into that familiarity by delivering it in an exaggerated, cartoonish style associated with Nickelodeon, turning a classroom rhyme into a punchline for goofy meme sounds. Shared through meme edits and short-form videos, it has stayed popular because the stretched ending is easy to recognise, easy to quote, and easy to drop over almost any silly moment.