The phrase comes from Brazilian internet slang, where homi is a casual spelling of homem and brabo means tough, angry or impressively good at something. Clips in this style circulate mainly as WhatsApp audios and short meme edits, passed around without a single credited source. Its humour depends on that contrast between a serious claim of toughness and an obviously playful delivery. It remains popular for reaction videos because the line is instantly quotable, easy to recognise from the first words, and flexible enough for people, animals and fictional characters.