Desce daí seu corno is a Brazilian Portuguese phrase that circulates online as a reaction and meme sound, shared in short clips and soundboard collections. Seu corno is a familiar informal insult in Brazil, roughly linked to being cheated on, and it is often used jokingly between friends rather than as a serious accusation. The humor comes from the everyday scolding tone applied to absurd situations, so editors reuse the audio over unrelated footage whenever someone is literally or figuratively in a place they should not be.