Plebitas is a popular slang term for "girls" or "chicks" from the northern Mexican state of Sinaloa, the cradle of this style of music.
In the lyrics, Peso Pluma boasts "las plebitas son del Instagram" (the girls are from Instagram), rooting the song in modern culture. It's the perfect example of regional slang that will help you understand the world of corridos tumbados and sound more like a local.
Mexican singer Peso Pluma teams up with Argentine producer Bizarrap for a post-breakup track fueled by partying and hard-earned luxury. Instead of moping at home, Peso Pluma deals with heartbreak by staying awake for nights on end, drinking, and hitting up someone new: "Estoy pedo, no te voy a mentir / Le hablé a otra morrita al deducir que te perdí" ["I am drunk, I am not going to lie to you / I talked to another girl after figuring out that I lost you"]. He is very blunt about moving on, warning his ex that when she finally wants him back, it will be too late.
He uses Mexican regional slang to set the scene, talking about partying ("pistear" [to drink/party]) with women he meets online ("las plebitas son del Instagram" [the young girls are from Instagram]). To prove how far he has come, he flexes big status symbols: expensive Patek Philippe watches, thick chains, and fine champagne as he travels between Los Angeles and Sinaloa. It is an honest look at coping with loss by leaning straight into success and wild nights.