The 'Smug Anime Face' refers to a trope in anime and manga where a character exhibits a self-satisfied, arrogant, or mischievous facial expression, often characterized by a small smirk and half-closed eyes. This visual shorthand conveys a sense of superiority or the knowledge of a secret that the viewer or another character hasn't realized yet. While the trope has existed for decades, it became a staple of internet culture through characters like Sanya V. Litvyak or more recently Anya Forger from Spy x Family. These images are primarily used as reaction images to mock an opponent's argument, express triumph after a debate, or simply to act as a playful 'troll' face within online communities and forums.