Guai translates to "troubles" or "woes." While not extremely rare, it's a more evocative and less common word than simply saying "problemi" (problems).
In the context of "Un Amico È Così," it appears in the line "Se come te anche lui ha i suoi guai" (If, like you, he also has his troubles). It beautifully captures the shared difficulties and vulnerabilities that friends experience, highlighting the empathy and support central to the song's theme of true friendship.
Have you ever had a friend who just gets it? That's what this song is all about. Laura Pausini sings about the kind of friend who sticks around even when things are tough for both of you. This person doesn't need a long explanation; they just show up. As she puts it, "Non chiederà né il come né il perché" (He won't ask how or why), he'll just listen and even "si batterà per te" (fight for you). It's a beautiful description of loyalty that goes beyond words—sometimes all you need is a single look to understand each other.
The song compares this deep friendship to a great love, saying it's "come un grande amore, solo mascherato un po'" (like a great love, just a little disguised). It's a powerful bond that Pausini calls "la cosa più bella che c'è" (the most beautiful thing there is). The song ends with a piece of advice and a promise: never betray a friend like this, because a true friend is your companion on life's biggest journey, "qualcosa che non muore mai" (something that never dies).