"Yorokobe, zasshu" is associated with Gilgamesh from the Fate franchise, where the character became known for his arrogant, dismissive way of speaking. Online, the line spread through anime clips, Fate edits, and subtitled reposts that highlighted his royal attitude. It remains popular because the phrase is short, instantly recognizable to anime fans, and easy to use as a punchline for superiority, mockery, or over-the-top villain energy in short edits and reaction posts.