Sazae-san began as a manga by Machiko Hasegawa in 1946 and became a Japanese television anime in 1969, eventually becoming one of the longest-running animated series in the world. Its closing rock-paper-scissors game, known in Japan as janken, invites the audience to play along at home, and that simple ritual helped turn the show into a Sunday evening tradition for generations of families. Online, the short janken moment is now reused as a lighthearted way to frame choices, votes, and friendly competitions in memes and short-form videos.