Fulanito is the Spanish equivalent of "so-and-so" or "what's-his-name". It's a placeholder name for an unspecified person, similar to using "John Doe" in English, but used much more commonly in everyday conversation.
In this song, Becky G uses "fulanito" to refer to a mysterious guy who has her captivated. The affectionate suffix "-ito" adds a playful and endearing tone, perfectly capturing the song's flirty vibe about an irresistible, unnamed flame.
Ever had a crush on someone whose name you don't even know? That's the whole idea behind "Fulanito"! In Spanish, fulanito is a playful way to say "so-and-so" or "what's-his-name." Becky G sings about a mysterious guy who has her completely hooked. She says, "Él es el fulanito / Que me tiene loca a mí" (He's the so-and-so / Who has me going crazy). Their connection is all about dancing and having a good time, with a plan to dance closely all night long—"Bailando apreta'ito' / Hoy no vamos a dormir" (Dancing real close / We're not going to sleep tonight)—until they get kicked out of the club.
This song is a fun back-and-forth between two very confident people. Becky G knows her power, singing that when she moves, "Se te nota que te gusta" (It's obvious you like it). Then, Dominican artist El Alfa jumps in with his own hilarious boasts. He claims he's going to leave ten other women just for her and brags about buying a mansion "a base de caderas" (with his hips). It's a flirty and energetic track about the thrill of a new, intense attraction on the dance floor.