Conchetumare comes from the Spanish phrase concha de tu madre, a very common swear in Chile and other parts of Latin America, shortened and shouted here as one stretched word. The exact recording behind this clip is not clearly documented, but short yelled versions like this spread through WhatsApp audios, soundboards and short video edits in Spanish-speaking meme communities. Its appeal is the instant recognition: Spanish speakers know the swear, and everyone else hears pure shock, so it works as a reaction even without translation or context.