The phrase is frequently used as a title or key scene in fan communities (e.g., TikTok-based fanfics involving characters like Rebekah Mikaelson):
In Brazilian social media culture, "o sorriso da morena" is often used as a playful warning (e.g., "Smoking kills, but the brunette's smile is what really gets you"): O Sorriso da Morena
This story leans heavily into the "enemies-to-lovers" or "mysterious stranger" tropes. The tension in scenes where characters exchange "ironic, self-assured smiles" is palpable. The phrase is frequently used as a title