Plebita is a colloquial term from Northern Mexico, especially the state of Sinaloa, used to refer to a young woman or girl. It's the diminutive form of plebe, which means 'common folk' or 'the kids'.
This word is a hallmark of the corridos tumbados genre. When Peso Pluma sings about a plebita calling him, he's using authentic regional slang to paint a vivid picture of his world, making you feel like you're getting an inside look at the culture behind the music.
Peso Pluma and Natanael Cano give us a look into a very specific, very fast lifestyle in "PRC". The song describes the daily grind of someone in the drug trade. The day starts with work: "Me levanto, un baño y luego me pongo a forjar" (I get up, take a shower, and then I start to roll). The business is booming, with phones that "no paran nunca de sonar" (never stop ringing) from clients and girls. The lyrics are direct about what's being sold, mentioning "Polvo, ruedas y también cristal" (Powder, pills, and also crystal meth).
Despite the dangerous work, the attitude is confident and focused on the rewards. The narrator isn't complaining about this life; in fact, he says "Disfrutamos esté bien o mal" (We enjoy it, whether it's good or bad). The money that "viene y va" (comes and goes) pays for a life of luxury, including looking "Fino con las Balenciaga" (Sharp with Balenciagas). It's a song about living in the moment, with no regrets and no looking back, asking "¿Para qué vamos a voltear pa'tras?" (Why would we look back?).