Let's Fighting Love comes from the South Park episode Good Times with Weapons, which first aired in 2004. In the episode, the song plays during the boys' anime-inspired fantasy sequences, making the joke land through its intentionally awkward English lyrics and upbeat style. Over time, the chorus spread online in parody anime edits, gaming videos and meme compilations. It remains popular because it instantly signals exaggerated action and playful nostalgia for overblown cartoon fight scenes.