The 'It's a Simple Spell But Quite Unbreakable' meme originates from the 2018 Marvel Studios blockbuster 'Avengers: Infinity War.' In the scene, Doctor Strange confronts Ebony Maw, explaining that a protection spell prevents the Time Stone from being taken. The line quickly became a popular internet reaction to describe situations where a basic action, minor rule, or low-tech solution provides surprisingly effective protection or creates an impasse. It is frequently applied to IT workarounds, childhood logic, and clever social maneuvers where a 'simple' barrier proves to be insurmountable for an opponent.