Escaparate literally translates to "shop window" or "display case". It's a creative and modern compliment you won't find in a textbook.
In the song, Quevedo describes a woman with a "cuerpo de escaparate" (a shop window body). He's comparing her figure to a perfectly styled mannequin, implying she has a flawless and head-turning physique. It's a clever and memorable metaphor for calling someone stunning.
This song tells the story of an absolutely unforgettable night out. Quevedo spots a girl at the club and is instantly hooked. She's confident, using her glass as a mirror to put on lipstick, and she makes the first move, telling him, "vamos que te enseño Buenos Aires" (let's go, I'll show you Buenos Aires). They leave together, and the night flies by. The chorus sums it all up: "Perreamo' toda la noche y nos dormimo' a las diez" (We danced reggaeton all night and fell asleep at ten). It's a simple, perfect memory of a wild night that lasted until the next morning.
But it's more than just a party anthem. After that one night, he's completely fallen for her. He's begging her to stay because "las noches sin ti duelen" (the nights without you hurt). He can't stop thinking about their time together and makes it clear he wants more, telling her he doesn't want anything that isn't with her. He's so serious that he invites her to his home in the Canary Islands, telling her to come "sin el equipaje y sin viaje de vuelta" (without luggage and without a return trip). It's a huge, romantic gesture that shows this one incredible night has turned into a desperate plea for love.