Janguear is a Puerto Rican slang term derived from the English phrase "hang out." It means to go out, socialize, and party, often with friends.
In the context of "Downtown," the lyrics state, "Sabe que se hizo pa' janguear" (She knows she was made to party/hang out). This word perfectly captures the song's theme of a woman who loves to go out, dance, and enjoy the nightlife, making it a vibrant and culturally specific term.
Yandel links up with Ery, Gadiel and Square Houze for a pure club track built around one hook — a woman crowned "reina del downtown" ("queen of downtown"). It opens on a shouted "Mucho reggaeton-ton" ("A lot of reggaeton-ton") before the verses set the scene: getting dressed and out the door early, "Desde temprano puesta la combi, ya a las 11 ready" ("Outfit on early, already ready by 11"), then straight onto the floor as the DJ keeps the beat going — "Dj, dale dembow, que ella ama el reggaeton-ton-ton" ("DJ, give it dembow, 'cause she loves reggaeton-ton-ton") — while the crowd repeats "Y en la calle la conocen como reina del downtown" ("And in the street they know her as the queen of downtown").
The back half turns into a roll call, each artist naming himself and his crew over the same beat — "El General Gadiel" ("General Gadiel") among them — before the track closes the way it opened, chanting the neighborhood's name one more time.