Buitres literally translates to "vultures," the large scavenger birds. It's a strong, evocative word that you won't find in a typical pop song.
In the track, the artist uses it as a powerful metaphor for rival men. The line "yo gano por más que te tiren los buitres" (I win no matter how much the vultures throw themselves at you) paints a vivid picture of competitors aggressively pursuing his love interest. This clever slang use adds a layer of swagger and intensity to the lyrics.
This song is a landmark of Latin trap, and it pulls no punches. "Esclava Remix" is all about a secret, purely physical hookup. The artists describe a woman who is cheating on her partner to be with them, telling her "si llaman pichea el cell" (if they call, ignore the cell). The central idea is laid out right away: "Hoy serás mi esclava en el cuarto de un hotel" (Today you will be my slave in a hotel room). In this context, "esclava" (slave) isn't literal; it's a very blunt way of describing a dynamic of sexual dominance and submission for one night.
The verses are a competition in who can be the most explicit and aggressive. The artists mix detailed descriptions of sex with classic gangster bravado. Anuel AA threatens the woman's boyfriend, saying "A tu gato que se quede quietico / O te lo voy a dejar tirao' en la Campo Rico" (Tell your man to stay quiet / Or I'll leave him dumped in Campo Rico). It's a song about satisfying lust in secret, where the only rule is that "el secreto nadie va a saber" (nobody will know the secret).