There is no widely documented source for this short Portuguese announcement, which circulates mainly through user-uploaded soundboards as a standalone transition clip. Its wording borrows the language of physical media, when listeners had to turn a cassette or vinyl record to hear side B. That retro cue is why creators keep reaching for it: it needs no translation to signal that something extra is coming. In memes and short videos it now works as a tongue-in-cheek chapter marker, splitting a joke, reveal or comparison into two deliberate parts.