Tatuajito is the diminutive form of tatuaje (tattoo), literally meaning "little tattoo". Adding the suffix -ito is common in Spanish to imply smallness, cuteness, or affection.
In the song, the line "Muéstrame ese tatuajito secreto que no se ve" (Show me that secret little tattoo that can't be seen) uses this word to create a playful and intimate tone. It suggests a hidden, personal detail, making it a key word that captures the romantic and flirty vibe of the track.
Puerto Rican singer Rauw Alejandro teams up with Colombian artist Camilo for this catchy reggaeton remix, and the whole track is basically an explosion of pure infatuation. The hook repeats the central obsession with lines like "Estás pa' comerte toda, todita, así estás tú" ("You're looking good enough to eat completely whole, just like that") and praises her face and ink with "Te ves tan rica, esa carita y ese tattoo" ("You look so fine, that cute face and that tattoo"). When Rauw sings "haces que la nota nunca se baje" ("you make the high never come down"), he uses the slang word la nota (literally the musical note, but here meaning a buzz or a good mood high) to say that just being around her keeps his energy up without needing anything else.
Camilo steps in and immediately dials up the romance to ten. He wants to move past the friend zone, begging for "un beso de esos que no son de amigos" ("one of those kisses that aren't for friends"), and gets hilariously dramatic when he promises "En las costillas me tatúo tu nombre" ("I'll tattoo your name on my ribs"). Later, he gets curious about her secrets, asking "Muéstrame ese tatuajito secreto que no se ve" ("Show me that little secret tattoo that can't be seen"). It is sweet, playful, and wonderfully direct about wanting nobody else in the morning except her.