The term Futanari refers to a specific genre in anime and manga culture, which has become a recurring subject of internet memes primarily focused on shock humor or the 'those who know vs. those who don't know' trope. In these memes, the concept is often used to highlight the surprise or subverted expectations of viewers encountering specific content for the first time. It is a common fixture in anime-centric communities, where it serves as a way to bond over shared knowledge of niche internet subcultures. Most memes involving the term use reaction images to convey a sense of realization or comedic disbelief, making it a significant, if controversial, part of modern web discourse.