The line comes from the 1975 comedy film Monty Python and the Holy Grail, where King Arthur and his knights repeatedly retreat from dangers that defeat their heroic image. Their shouted Run Away became one of the film's most quoted moments, passed around through reruns, quote clips and early internet soundboards. Because the phrase is plain, loud and understood without context, it survived as a standalone reaction sound. Creators still use it for gaming retreats, animal chases and joke battles where fleeing is funnier than fighting.