Travieso translates to "mischievous" or "naughty". It's a playful word used to describe someone who enjoys bending the rules for a bit of fun.
In the song, Romeo Santos sets a flirtatious tone by asking, "Dígame usted si ha hecho algo travieso alguna vez" (Tell me if you have ever done something mischievous). This charming and slightly daring question is the first step in his "indecent proposal," making travieso a key word that perfectly captures the song's seductive and playful spirit.
Romeo Santos really lives up to his name in this song! He introduces himself, "Hola / Me llaman Romeo" [Hello / They call me Romeo], and immediately makes a move on a woman he's just met. He doesn't waste any time, telling her he doesn't care about the man she's with. His whole philosophy is that "Una aventura es más divertida / Si huele a peligro" [An adventure is more fun / If it smells of danger], and he spends the rest of the song trying to convince her of that.
He lays out his entire plan in a series of increasingly bold questions he calls a "propuesta indecente" [indecent proposal]. It starts with a drink and a stolen kiss, but quickly escalates to him asking, "¿Qué dirías si esta noche / Te seduzco en mi coche?" [What would you say if tonight / I seduce you in my car?]. He keeps pushing to see how far she'll go, even asking if he could lift her skirt and then blame his actions on the alcohol. By the end, he drops all pretense and just asks if they can dance bachata and then "¿Terminamo' en la cama?" [end up in bed?]. It's a masterclass in confidence and seduction from the King of Bachata.