Roncar literally means "to snore," but in Caribbean Spanish, it's popular slang for "to show off," "to brag," or "to act tough."
In the song, Rauw Alejandro says, "En la disco me roncó," meaning a woman at the club was fronting on him or acting unimpressed. It’s a fantastic example of the kind of slang that gives urban music its unique flavor and is essential to learn for understanding the culture.
Okay, let's be clear: this song is not subtle. Rauw Alejandro, along with reggaeton legends Alexis & Fido, kicks the door down with a track that's all about one thing. The lyrics are a non-stop, explicit description of a very intense sexual encounter. Rauw sets the scene immediately, inviting a woman over with lines like, "Baby, esta noche es de entierro" (Baby, tonight is for burial), which is a slang way of saying they're going to have sex. He uses some pretty wild metaphors, comparing the night to a kidnapping—"Te voy a amarrar en mi cama / Esto es un secuestro" (I'm going to tie you to my bed / This is a kidnapping)—to describe a rough and dominant fantasy.
The whole song is basically a playbook of everything they plan to do. It's full of confident, boastful lines about his skills, like "Yo la llevo al punto G bien rápido / Me sé to' los atajo'" (I get her to the G-spot real fast / I know all the shortcuts). The lyrics are incredibly direct and use a lot of Puerto Rican slang, describing breaking the mattress springs and praising his partner's body and enthusiasm. It's a classic, high-energy reggaeton track that's purely focused on physical desire and a wild night, leaving very little to the imagination.