The phrase comes from 'Medley da maconha,' a 2014 funk carioca release credited to Mano DJ featuring MC Brinquedo, MC Pikachu, MC 2K and MC Bin Laden, as listed in the file's embedded tags. The two-second vocal 'eu sou malandrão, falou' was clipped from that medley and uploaded as a standalone meme sound, where the existing caption frames it around Mano DJ's persona. It spread through short-form edits and soundboards that favor punchy Portuguese slang for comedic bravado. Its continued use rests on instant attitude and nostalgia for mid-2010s Brazilian funk.