Today's Parola del Giorno is the verb expression sfidare la sorte, which means to tempt fate.

In English, to tempt fate means to do something with involves a risk and might possibly cause something unpleasant to happen or bring bad luck on yourself by talking too confidently about a situation.  

You can see the expression used below:

Mi sono svegliato stamattina e la mia ragazza mi ha detto: "Non dimenticare l'ombrello...pioverà!" Ma ho sfidato la sorte e l’ho lasciato a casa. Sono stato uno stupido! Quando sono arrivato al lavoro, ero tutto bagnato!!

I woke up this morning, and my girlfriend told me: "Don't forget the umbrella...it will rain!" But I tempted fate and left it at home.  I was an idiot!  When I got to work, I was all wet!