Pou was released in 2012 as a virtual pet mobile game where players feed, clean and play with a brown alien creature that repeats sounds in a high pitched voice. In Brazilian internet slang, estourado describes audio that is clipped and excessively loud. Clips labelled Pou Estourado apply that treatment to Pou noises and circulate on soundboards and in short video edits. The joke relies on the contrast between the cute original character and the aggressive volume, keeping it popular for reaction memes.