This line comes from Star Wars: The Clone Wars, the animated series built around the clone troopers who serve the Republic during the Clone Wars. Clones answer their Jedi generals and commanders with brisk military courtesy, and this short acknowledgement captures that discipline in a single phrase. Clipped from dialogue and shared on soundboards, it spread as a quick reaction for obedience, agreement and mock formality. It stays popular because the delivery is instantly recognisable to Star Wars fans and instantly readable to everyone else.