Tá doendo comes from Marinho Gameplays, a gaming creator whose reaction became a shareable soundboard clip for Portuguese-speaking meme and gaming communities. The phrase itself is everyday Brazilian Portuguese for something hurting, which is why it transfers so easily from gameplay to everyday embarrassment, sports mishaps and reaction videos. As a short standalone clip, it has survived because it is instantly recognisable in tone, even for listeners who only catch the emotion rather than every word, and because painful fails remain a constant source of short-form comedy.