Boquifloja literally translates to "loose-mouthed" or "loose-lipped," meaning someone who talks too much or reveals secrets easily. It's a colorful and somewhat informal word that isn't commonly found in song lyrics.
In "Amor Y Roma," the lyric describes "Una cenicienta muy loca y muy boquifloja" (A very crazy and very loose-lipped Cinderella). This playful and unexpected use of the word paints a vivid picture of a character who is unconventional and perhaps a bit rebellious, making it an intriguing choice for a learner.
Chano opens by warning you off: "Esta canción no te va a convencer ni te nombra" (This song won't convince you nor mention you). He isn't writing a love letter, he's talking around someone he can't stop thinking about, and the whole song runs on that half-denial.
The hook spells it out. "Amor es roma al revés" (Love is Rome backwards): spell "Roma" backwards in Spanish and you get "Amor." He builds the chorus on that trick, repeating "Yo no quiero nada, yo te quiero ver" (I don't want anything, I want to see you) like he's convincing himself as much as her. The verses keep circling the same contradiction. He insists he's fine, then admits "Nunca tuve nada ¿y qué?" (I never had anything, so what?), defensive and a little wounded in the same breath. It's a song about wanting someone while swearing you don't need them, and the reversed word in the title line makes that contradiction literal.