The origin of Thiago Gordo is unknown, with no confirmed original source, character or recording attached to the clip. The phrase uses Portuguese and Spanish wording where gordo means fat, so the nickname spread mainly as a personal roast among friends who know a Thiago. Short name based sounds like this circulate on soundboards and in messaging apps because they are easy to send out of context and instantly understood by the group. Its popularity stays tied to that inside joke use rather than any single viral moment.