Parqueo comes from the verb parquear, a common Spanish adaptation of the English verb "to park". While the more formal word is estacionar, parquear is widely used, especially in Latin America.
In this song, the singer says, "me parqueo por tu ventana" (I park myself by your window). It creates a charming and informal image of him settling in outside his beloved's house to serenade her, perfectly capturing the song's candid and heartfelt confession.
Have you ever needed a bit of liquid courage to confess your feelings? In "Ya Borracho", Mexican group Herencia De Grandes gives us a charming, slightly chaotic look at someone who is head over heels in love. The narrator admits right away that he went overboard, calling himself "un loco obsesionado" [an obsessed madman], but he quickly tells his crush not to freak out ("no te espantes"). His grand romantic strategy is simple: have a few drinks, park right outside her bedroom window ("me parqueo por tu ventana"), and play her favorite songs while begging her to pick up the phone so he can finally say what is on his mind.
What makes this track so fun is how honest and down-to-earth it is. He readily admits that the flowers he buys are cheap ("las flores no son tan caras"), but insists they carry all his soul's love anyway. He is already planning ahead for February ("pa' en febrero"), when he hopes to pop the question and officially become a couple ("hacer los novios"). He says alcohol is the only thing that gives him the nerve to spill his heart out ("Así borracho, me animo a decirte todo"), hoping that when the dust settles, she will be looking right back at him with the same big smile.