Gelos is the Neapolitan dialect word for "jealous". While the standard Italian word is "geloso", this song uses the regional variation, making it an interesting and authentic peek into Italian dialects.
In the lyrics, the artist sings, "O saccio si gelos" (I know you're jealous), directly addressing someone who he believes is envious of his success or lifestyle. It's a common human emotion, but the use of the Neapolitan form adds a unique flavor to the expression.
Dipinto raps this one in Neapolitan, and the whole song is aimed at one rival who will not stop circling. "Di-Di-Dipinto, ma tu si 'o boss" (Di-Di-Dipinto, but you're the boss) is said flat, the way you agree with someone just to end an argument, and the offer behind it, "Me vuo' putta' a Ibiza oppure a Mykonos?" (Do you want to take me to Ibiza or to Mykonos?), turns the rival into someone who would have to pay for the company. The verdict lands in the fourth line: "O cu' mme o cu' nisciun, già sai ca nun è cos" (Either with me or with nobody, you already know it's no good).
The verses stay close to the wardrobe and the mirror. He changes seven times a day, the mould in the closet has given way to sneakers spilling out of it, and his girl has run out of anywhere left to put them. Then he asks the mirror who is toughest and it answers with his own first name: "Arma', si tu" (Arma, it's you). Fresh Beatz keeps the beat bare enough for the dialect to carry, so the Patek in the photos and the Rolex in the closing list read as props rather than as the subject.