The line comes from the Portuguese dub of The Boys, where Homelander, known in Brazil as Capitão Pátria, is the series' powerful and unstable superhero leader. The phrase 'like a good boy' fits his pattern of treating obedience as loyalty and praise as control, which is why Brazilian meme editors lifted it from the show and turned it into a reaction clip. Shared through soundboards and short video edits, it survives because it instantly signals creepy authority without needing the full scene, making it easy to reuse whenever a character is praised for doing exactly what they were told.