The phrase comes from everyday Chilean slang, where wea can mean thing, stuff or a swear depending on tone, and weon is a very informal way to address a friend. Online, the full line no me ha llegado ni una wea weon became shorthand for receiving nothing at all. Spanish speaking users share the audio in chats and short videos as a dramatic complaint about late packages, missing messages and broken promises, and its regional slang is part of why it stands out from generic disappointment reactions.