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.
Fulanito is pure, unapologetic party fuel built for the dance floor. In Spanish, fulanito basically means "little so-and-so" or "what's-his-name"—a playful, nameless placeholder for a guy Becky G cannot take her eyes off. From the opening beat, she admits she was hooked instantly: "Quedé parti'a desde la primera" [I was broken/blown away from the first time]. The entire plan for the night is simple: drink, spend, dance close, and refuse to go home. Becky spells it out right away with "Bailando apreta'ito' / Hasta que nos boten de aquí" [Dancing tight and close / Until they kick us out of here]. When she sings "neta" [for real], she brings in classic Mexican slang to promise that tonight, they are burning through whatever money is on her card.
Then Dominican dembow star El Alfa jumps on the mic to brag about his status, his cash, and his dance moves. He delivers wild, hilarious flexes like "Me compré una mansión a base de caderas" [I bought a mansion off my hips] and brags about rolling in a "jeepeta" [luxury SUV] with a "roleta" [Rolex watch]. When he spots big spending, he shouts that "cuando saca la manilla, todita' son de ciene'" [when she pulls out the stack of cash, they're all hundred-dollar bills], name-dropping luxury labels like Louboutin, Louis Vuitton, and Supreme. He calls himself "tu Sansón" [your Samson], bringing the muscle and the party seasoning ("el sazón") while Becky G revels in having every other woman in the room jealous.