The 'Monika T-Posing Over Sans' meme stems from a piece of crossover fan art featuring Monika from Doki Doki Literature Club asserting her dominance via a T-pose over a cowering Sans from Undertale. It gained massive popularity as a 'dominance assertion' template, often used to depict overwhelming forces—like responsibilities, software updates, or new trends—intimidating someone who is just trying to exist peacefully. While both characters come from meta-fictional indie games, the visual contrast between Monika’s rigid stance and Sans’s defeated posture makes it a versatile format for any situation involving an unavoidable or superior threat.