The phrase comes from Brazilian internet humor, where exaggerated, flirtatious voice clips are passed around as WhatsApp audios and short-form memes. Abre gostosooo caught on because the stretched pronunciation makes it instantly quotable, and creators reuse it as a shorthand for playful desire without needing any visual setup. It spreads mainly through reaction videos, thirst-trap edits and friend-group chats rather than a single show or song. Its staying power is the tone: bold, silly and just suggestive enough to work as a joke.