The phrase combines wn, a shortened written form of a common Chilean insult for a foolish person, with mas perkin, meaning even more of a perkin. Perkin has circulated in Chilean slang for someone submissive, uncool or easily mocked, which makes the full line an intensified roast rather than a neutral description. As a short soundboard clip it spread through meme edits, group chats and reaction videos, where brevity matters. Its lasting appeal is how quickly Spanish speakers who know the slang understand the joke without any setup or context.