Espertos translates to "clever ones" or "smart ones." It's an interesting word because it can carry a double meaning, often implying a certain street smarts or even cunning.
In the context of the song, the line "Mas quem é que é o errado no mundo dos espertos?" (But who is the wrong one in the world of the clever ones?) challenges the listener to question societal norms and who truly defines what is "right" or "wrong." It's a thought-provoking word that encapsulates the song's rebellious spirit.
The title is the whole argument. "Eu sou o errado que deu certo" (I'm the wrong one who turned out right) is Chorão taking the label he was handed and wearing it, and the line straight after turns it back on everyone else: "Mas quem é que é o errado no mundo dos espertos?" (But who is the wrong one in a world of clever people?). The verses name the mechanism plainly — "Eles querem que você se sinta mal / Pois assim eles se sentem bem" (They want you to feel bad, because that is how they feel good) — and the answer is to stop competing at all: "Faça da sua vida algo melhor" (Make your life something better).
What keeps it from being only a defence is how little it ends up asking for. "Com o coração na mão" (with my heart in my hand) opens both choruses, "Minha mente voa livre, leve, louco, bicho solto" (my mind flies free, light, crazy, a loose animal) is the state being described, and the refrain the band keeps returning to wants nothing bigger than "Leve essa música / Me traz um sorriso" (Take this song — it brings me a smile). The last thing said is an invitation: "Vem comigo até o fim" (Come with me until the end).