Preservê is a colloquial and shortened form of "preservativo," which means "condom" in Portuguese. It's an interesting word choice because it's a very direct and somewhat informal way to refer to this item, making it stand out in the lyrics.
In the context of the song, the artist explicitly states, "Eu já me preparo e separo o preservê" (I already prepare myself and set aside the condom), indicating a clear intention for intimacy. The repetition of the word later in the song further emphasizes its presence and the theme of sexual encounter.
"Preservê" is Gaab's live pagode duet with Rodriguinho and Mr. Dan, recorded for the "Legado" DVD — a crowd song built on street swagger and a running joke about safe sex. The opening line sets up the woman at the center of it: "E ela é da minha rua, ela é estilosa" [And she's from my street, she's stylish]. The middle stretch turns into a call-and-response countdown, the crowd shouting numbers while the singers stack up reasons she's irresistible, before landing on the hook that gives the song its title: "Eu já me preparo e separo o preservê" [I get ready and grab a condom]. By the end the whole room is just chanting the word itself — "Preservê, preservê, preservê, preservê" [Condom, condom, condom, condom] — turning a piece of practical advice into the biggest sing-along of the night.