The 'The D' meme primarily originates from two distinct internet cultures: the mysterious 'Will of D' from the One Piece anime series and a more widespread double-entendre involving internet slang. In the anime context, it refers to a significant lineage of characters, while in broader social media usage, it serves as a punchline for suggestive humor. The template often features a character looking surprised, determined, or intensely focused on the letter 'D'. Its longevity is owed to its versatility, allowing users to pivot between niche fandom references and universal comedic tropes with ease.