This quote is associated with Luigi, Nintendo's long-running Mario character, and is widely recognized by players from classic Mario-era voice clips. Online, it spread through gaming memes, soundboards and short edits because the line is simple, upbeat and instantly readable as a joke. It remains popular because Luigi has a built-in underdog image, so hearing him loudly call himself number one makes even minor victories feel funnier. The clip still shows up in retro gaming posts, Mario edits and ironic celebration memes.