Fiera literally translates to "wild beast". It's a powerful word used to describe a fierce, untamed animal.
In "Ven Conmigo", Daddy Yankee uses it as a metaphor for raw, untamed energy on the dance floor. When he says "Saca saca la fiera" (Bring out the beast), he's hyping up the crowd, telling them to let go of their inhibitions and unleash their inner party animal. It's a perfect example of the high-energy slang that makes reggaeton so exciting.
"Ven Conmigo" is an absolute blast of an invitation to keep the party moving when someone tries to leave early. Right at the start, Prince Royce spots a girl and falls for her gaze, but then she starts heading for the door: "Y ahora se va / Y le caigo atrás" ("And now she is leaving / And I run after her"). The main hook is simple and urgent: "Ay mami ven conmigo / Es muy temprano para regresar a la disco" ("Oh mami come with me / It's too early to go back to the club"). He wants her to stay with him instead of calling it a night. Puerto Rican reggaeton heavyweight Daddy Yankee jumps right in to handle hospitality, ordering her to put her wallet away because "la casa invita" ("it's on the house").
From there, Daddy Yankee brings out his wildest party lines. He brags, "Tengo la nave afuera / Vamos a mi planeta" ("I have the spaceship outside / Let's go to my planet"), even shouting out "Los de la NASA" ("The ones from NASA") as if his crew is heading into orbit. He also throws around heavy Caribbean street slang: "rompe ese bumper duro" uses "bumper" as car slang for hips or backside, while "los quedao se van pa la siesta" dismisses the "quedao" (slackers or left-behind party poopers) to their naps so the real crowd can take over the dance floor. It is pure, energetic dancehall persuasion built to make you move "de lo pies a la cabeza" ("from head to toe").