Hamilton Mourão is a retired Brazilian Army general who served as vice president of Brazil from 2019 to 2022 under Jair Bolsonaro. Short clips of his public greetings began circulating in Brazilian WhatsApp groups and meme pages, where his serious, formal manner became a running joke. The 'bom dia' recording was cut down to a single phrase and shared as a reusable audio, separate from any speech or interview. It remains popular because Brazilians use it both sincerely to say good morning and ironically to mock overly formal authority figures online.