Jerga is the Spanish word for "slang". It refers to the informal words and phrases unique to a specific group or region, and it's a key part of sounding like a native speaker.
In "LA MUDANZA", Bad Bunny proudly sings, "En el mundo entero ya conocen mi dialecto, mi jerga" (The whole world already knows my dialect, my slang). He's celebrating how his authentic Puerto Rican Spanish has become a global phenomenon, making this the perfect word to learn if you want to understand the real language behind his music.
This song starts with a beautiful story about how Bad Bunny's parents met. He tells us his dad, Tito, was working hard driving trucks since he was a kid, even though he wanted to be an engineer. One day, he helped a friend with a move—la mudanza—and that's where he met Lisy, Bad Bunny's mom! He lays out their whole history, from getting married to where they lived when he was born. He ends the story with a huge shout-out: "Un aplauso pa' mami y papi porque en verdad rompieron" (A round of applause for mom and dad because they really killed it).
Then the song completely switches gears. It becomes a powerful declaration of his identity and his deep love for Puerto Rico. He connects his success to his upbringing, thanking his parents for their discipline, or "to' los jalones de oreja" (all the ear-pulling). He gets political, mentioning how people were killed for raising the Puerto Rican flag, which is why "ahora yo la llevo donde quiera" (now I take it everywhere). He makes it clear that no matter how famous he gets, he will never leave his home. The song ends with him proudly chanting, "Yo soy de P fuckin' R" (I'm from P-fucking-R).