Barulho Chato is Portuguese for annoying noise, and the name explains exactly how the clip is used online. The short sound circulated on user soundboards as a reaction clip, shared in edits where something irritating needs to be underlined without explanation. Because it lasts only about two seconds, creators can drop it into short videos, group chats and meme compilations as an instant cue for frustration. Its popularity comes from that directness, as listeners do not need to know a character or source scene to understand the intended mood.