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 wastes zero time being polite in "Propuesta Indecente" (Indecent Proposal). Right from the opening lines, he greets a woman and lays all his cards on the table: "Te adelanto, no me importa quién sea él" [I'll tell you in advance, I don't care who he is]. He does not care if she is already with someone else because, as he puts it, "Una aventura es más divertida si huele a peligro" [An affair is more fun if it smells like danger]. He is openly trying to seduce her, offering a drink to loosen her up ("este Martini calmará tu timidez" [this Martini will calm your shyness]) and throwing out wild ideas, from steaming up his car windows to stealing a kiss and blaming it on the drinks ("luego culpo al alcohol" [then I'll blame the alcohol]).
It is bold, cheeky, and completely shameless. Romeo switches between smooth Spanish sweet talk and playful English phrases like "Take it off" and "I know what you like." By the time the track hits its peak, he spells out the entire offer without any filter: "¿Bailamos bachata? Y luego ¿terminamo' en la cama?" [Shall we dance bachata? And then do we end up in bed?]. He asks if she finds this whole "propuesta indecente" [indecent proposal] wise, but he clearly hopes she throws caution out the window.