Eita peste is a colloquial Brazilian Portuguese interjection, especially associated with the Northeast of Brazil, where peste is used as an intensifier in expressions of astonishment. The phrase has travelled widely through short-form video, memes and WhatsApp voice notes, where its punchy rhythm and unmistakable accent make it instantly recognisable even to listeners who do not speak Portuguese. Because it is short, expressive and easy to reuse, it remains a popular reaction sound for creators commenting on surprising, absurd or unbelievable moments online.