Plebada is a very common slang word in Mexico for your 'crew,' 'homies,' or 'folks.' It's the plural form of plebe, which informally refers to a young person or commoner.
In the song, the artist kicks things off by addressing his friends directly, saying, "Plebada, ya me perdieron" (My crew, you've lost me), to announce that he's fallen hopelessly in love. It's a fun, authentic word that will instantly make your Spanish sound more native!
This song is a straight-up declaration of being completely obsessed with someone. The title itself, "Enculado," is a very blunt slang term for being head over heels for a girl. The singer tells his friends, "Plebada, ya me perdieron, me traen enculado" (Guys, you've lost me, she's got me totally hooked). He's fallen hard ever since he "probé sus besitos" (tasted her little kisses) and loves her way of "llevarme a mirar las estrellas" (taking me to see the stars).
He also has a bit of a bad-boy reputation. He wonders if the neighbors give him weird looks because he arrives in "carros bien polarizados" (heavily tinted cars). Despite this, he tries to be a gentleman, telling his girl to reassure her mom that he'll take care of her and that "conmigo está safe, suegra" (she's safe with me, mother-in-law). He paints a picture of a wild relationship where she's not afraid of his lifestyle, saying that if he takes out his rifle, "también le gusta jalarlo" (she also likes to pull the trigger). For him, she's perfect: "Eres todo lo que había soñado" (You're everything I had dreamed of).