Secuestrar literally translates to "to kidnap". It's a very strong and dramatic word that immediately grabs your attention.
In the context of this reggaeton track, it's used metaphorically to express an intense, playful desire. The singer says, "En esta esquinita te voy a secuestrar" (In this little corner, I'm going to kidnap you), meaning he wants to steal his dance partner away from the crowd and have her all to himself. It's a hyperbolic way to show passion and create a scene of intense, private connection amidst a party.
This song is all about that moment when a casual flirtation suddenly feels like something much more. The singer starts by making a big distinction: “Yo siempre había singa'o / Pero contigo es primera vez que hago el amor” (I had always f*cked / But with you is the first time I make love). He's been caught completely off guard by his feelings for this person while they're dancing closely in the VIP section of a club.
He was happy being single, but now he's praying to God that their moment of “perreándono'” (grinding on each other) never ends. He's even starting to imagine a future together, though his immediate plan is a bit more direct: “Se me está ocurriendo un futuro para los dos / Que empieza esta noche en mi cama” (I'm thinking of a future for the two of us / That starts tonight in my bed). It's a perfect mix of intense physical attraction and the surprising shock of catching real feelings.