The phrase comes from Turkish internet slang, where 31 is widely used as a coded reference to masturbation and lan is a blunt, informal way of addressing a man. As a sound, it circulates mainly as a short reaction clip on meme soundboards and in short-form videos, where its appeal is less about a specific show or creator and more about the shared recognition of the slang. That instant recognition keeps it useful for teasing, prank and reaction edits, especially among Turkish-speaking audiences who understand the double meaning at once.