Sticazzi is a very common, informal, and somewhat vulgar Italian interjection that literally translates to "to these cazzi" (cazzi being the plural of cazzo, meaning penis). It's used to express indifference, dismissal, or a lack of concern, similar to "who cares!" or "I don't give a damn!" in English.
In the song, it appears twice: "Sticazzi, tanto mica è sabato sera" (Who cares, it's not even Saturday night) and again later. This word perfectly captures the song's carefree, slightly rebellious, and spontaneous mood, where the characters are living in the moment and dismissing conventional worries. It's a raw and authentic expression of Italian slang that adds a lot of character to the lyrics.
Fulminacci's "San Giovanni" feels like a late-night conversation you never want to end, even when it's clearly time to go home. The song is full of these little, relatable moments, like being "Sotto un tetto di stelle vicino San Giovanni" [Under a roof of stars near San Giovanni] and just watching the "luce, col fumo, che scappano tra i panni" [light, with smoke, escaping between the clothes]. It's that feeling of being with someone for years, even if they're not "with anyone" else, as he says: "Tu che stai con nessuno ma io con te da anni" [You who are with no one but I with you for years].
There's a real push and pull in the lyrics, a kind of sweet frustration. He's trying to express something important, but it's not coming out right: "Io di solito parlo un po' meglio di così" [I usually speak a little better than this]. And then there's the classic, "Che forse è l'ora di andare a dormire / Io però a casa non ci voglio tornare" [That maybe it's time to go to sleep / But I don't want to go home]. He'd rather stay out, admiring the moon, even if his back hurts! He just wants to keep watching them, maybe dance to Lucio Dalla, even if it "non si può fare" [can't be done]. It's a charming, slightly messy picture of a connection that's hard to define but impossible to let go of.