Ratinho, the stage name of Brazilian presenter Carlos Massa, is known for his loud, theatrical style on Programa do Ratinho on SBT, where Eita became one of his trademark expressions of surprise. Clips of his reactions circulated widely in Brazilian meme pages and messaging groups, and editors began cutting the single word out for reuse. Because the shout is instantly recognisable in Brazil and needs no translation to convey shock, it remains a go-to reaction sound for comedy edits and short videos.