The line comes from the world of The Karate Kid, the 1984 martial arts film about teenager Daniel LaRusso and his mentor Mr Miyagi, played by Pat Morita. Miyagi's patient, accented way of addressing his student as Daniel-san became one of the film's most quoted traits and later a staple of parodies and tribute edits. Short dialogue clips like this egg roll exchange circulated on soundboards and in video edits because the actors are instantly recognisable even without picture, turning a small mentor moment into a reusable reaction joke.