The word surubi refers to a freshwater catfish found in South American rivers and prized by anglers, which helps explain why the line feels at home in fishing clips and outdoors videos. Online, the short Spanish exclamation has circulated as a reaction sound, shared between meme pages and creators who need an instant expression of amazement. Its brevity is part of its appeal: the whole joke is delivered in under two seconds, so it can be dropped into edits without slowing the pace or needing translation for viewers who recognise the tone even if they do not speak Spanish.