The 'Oh Fuck Did Margaret Sit Here' meme features a photograph of a suspicious-looking damp spot on a fabric chair, typically implying a gross or awkward situation involving an elderly coworker or relative. It gained viral status on social media platforms like Reddit and Twitter as a form of visceral gross-out humor, capturing the specific moment of realization and immediate regret when spotting a wet patch in a shared space. The meme is frequently used to describe uncomfortable office environments, social blunders, or simply to prank friends. Its simplicity and the relatable (if cringeworthy) nature of the image have made it a staple for reaction posts involving hygiene mishaps and awkward social encounters.