The phrase is built from Chilean slang, with ctm short for a strong expletive, followed by que es eso mira meaning what is that, look. Clips with this wording circulate as short Spanish reaction audios on soundboards and in messaging chats, shared detached from any clear original recording. Its appeal is the escalating delivery, which lets users borrow the shock without recording their own voice. It has stayed useful because it fits many contexts, from weird finds to embarrassing reveals, and is instantly understood by Spanish speaking audiences.