Guardaespalda' is a colloquial form of "guardaespaldas," meaning "bodyguard." It's an interesting word because it's a compound noun that literally translates to "guards back."
In the song, Lele Pons sings, "Que yo seré tu guardaespalda', tu backup" (I'll be your bodyguard, your backup). This line is playful and endearing, offering protection and support to her love interest in a unique way that goes beyond typical romantic declarations.
"Abajito" is a flirty, high-energy collaboration between Lele Pons and Guaynaa built on protective promises that quickly turn into innuendo. The opening verse has the narrator vowing to be their partner's "guardaespalda', tu backup" [bodyguard, your backup], "tu memoria externa" [your external memory], and "la luz de tu linterna" [the light of your flashlight] -- playful lines that dress up attraction as loyalty. The hook keeps circling back to "Y abajito me quede" [And I stayed down], repeated again and again as the two can't quite pull away from each other.
Later on the wordplay gets bolder: "Si se prende el fuego yo le digo, 'Papi, ven con manguera'" ["If the fire catches, I tell him, 'Daddy, come with a hose.'"] and "Me derrito como vela" [I melt like a candle] lean fully into the song's cheeky, tongue-in-cheek tone. By the outro the artists even drop their own names into the lyrics -- "El Guaynaabichy" and "Le-Lele Pons" -- turning the track into a cheerful victory lap for the duo themselves.