Manual do Mundo is a popular Brazilian YouTube channel presented by Iberê Thenório, known for science experiments, DIY projects and curious explanations delivered in an enthusiastic, accessible style. Short moments from its videos are often clipped, shared and reused by viewers, especially in Brazil, where the channel has a large and loyal audience. This brief audio survives as a soundboard and messaging clip because Iberê's voice is so immediately recognisable, and because a two-second excerpt is easy to drop into memes, reaction videos and group chats without needing the context of the original video.