The exact source of this upload is unclear, as it circulates mainly through meme soundboards and short-form video rather than a credited film or show. The wording plays on the long-running 'So long, gay Bowser' mishearing joke from Super Mario 64 fandom, which turned a throwaway victory line into a widely quoted camp farewell. That association helped versions of the phrase spread as reaction audio for ironic goodbyes. It endures because the line is short, instantly quotable and flexible enough to close almost any funny exit.