The clip comes from a Spanish language fandub animation based on Undertale, the 2015 role playing game created by Toby Fox, with Sans revoiced for comic effect. Fans cut single shouted lines like this one from longer fandub videos and turned them into shareable meme sounds. Its appeal is the contrast between Sans and the childish logic of calling the ocean soup because it is salty and full of things floating in it. Spanish speaking meme pages and soundboards kept the line circulating long after the original edit.
About this sound
Spanish Sans fandub meme from Undertale where he shouts that the ocean is a soup. Creators use it for absurd edits, ocean jokes and random punchlines.
This is a loud Spanish fandub clip of Sans from Undertale declaring that the ocean is a soup, delivered with total conviction over a short animated meme scene. The joke lands because the line treats a huge, salty body of water like a simple bowl of food, and the exaggerated shouting makes the nonsense sound like a serious revelation. It works as an instant absurd reaction, breaking a normal conversation or explanation with a statement that is confident, unexpected and impossible to argue with without sounding just as silly.