Regañar means "to scold" or "to tell off." It's a common verb in everyday Spanish, often used in family contexts.
In this song, Bad Bunny uses it to add a surprising and humorous twist to his tough-guy image. He warns his lover not to scratch him or leave marks, singing, "Que después mami me va a regañar" (Because then my mom is going to scold me). This playful confession that he's still afraid of his mom is both funny and relatable, making it a very memorable line.
In "Te Gusté," Puerto Rican artist Bad Bunny and superstar Jennifer Lopez jump into a playful, flirtatious debate about who is actually running the game. The entire track builds on a cheeky call-and-response chorus: Baby, no te hagas sé que te gusté ("Baby, don't play dumb, I know you liked me"), immediately followed by the challenge Tú hablas mucho y no haces nada ("You talk a lot and do nothing"). Bad Bunny brings his trademark bold, humorous swagger to the verses, throwing out plenty of local Caribbean slang. He asks Dime si eres chapi' que estoy puesto pa' invertir ("Tell me if you're a gold digger, because I'm down to invest"), using chapi (short for chapeadora, slang for someone seeking wealthy partners), and jokes about avoiding drama at home with No me hagas hickey... Que después mami me va a regañar ("Don't give me a hickey... Or my mom will scold me later").
Jennifer Lopez is having none of his bravado, stepping in to demand real action over cheap talk. She shuts down his boasting by singing Todos siempre creen que son expertos / Vamos a ver si lo que dices es cierto ("Everyone always thinks they're experts / Let's see if what you say is true"). J.Lo directly calls out men who act tough but no duran ni dos minutos ("don't even last two minutes"), reminding him exactly who he is dealing with by flipping her classic Bronx moniker: Que tú puedes ser Bad Bunny but I'm Jenny from the... You know my name ("You might be Bad Bunny, but I'm Jenny from the... You know my name"). It turns a classic reggaeton club track into an entertaining battle of wits where both sides refuse to back down.