Desliz literally means "a slip" or "a slide," like when you lose your footing. However, it's often used figuratively to mean a small mistake, an indiscretion, or a romantic fling.
In this song, Shakira sings, "Yo te propongo un desliz" (I propose an indiscretion to you), using the word in a playful and daring way. She follows it up by calling it "un error convertido en acierto" (a mistake turned into a success), suggesting that sometimes breaking the rules can lead to something wonderful.
Colombian pop star Shakira leans entirely into female instinct and direct seduction here. From the first line, she shuts down small talk: No me preguntes más por mi / Si ya sabes cual es la respuesta ("Don't ask me more about myself / If you already know the answer"). She decides right away to take charge, calling herself un volcán hoy ("a volcano today") and proposing un desliz ("a slip-up" or "a secret affair"), which she cheekily promises will become un error convertido en acierto ("a mistake turned into a success"). She treats love casually, brushing it off with El amor tal vez / Es un mal común ("Love maybe is a common illness"), while reassuring her target that she survived it and is ready for fun.
The real power of the track sits right in the chorus. Shakira boldly claims Nos deseabamos desde antes de nacer ("We desired each other since before being born"), trusting her gut that things are about to heat up. Her big punchline is las mujeres somos las de la intuición ("women are the ones with intuition"). In Spanish, using the phrase las de points to women as the true owners and masters of that sixth sense. She knows what is going to happen before it even begins, and she is not waiting around for anyone else to make the first move.