Tamarre is an interesting slang term that refers to someone, often a woman, who is considered tacky, trashy, or unrefined in their appearance or behavior. It carries a slightly derogatory but often playful connotation.
In the song, Luchè contrasts his usual experience with women, saying, "Che me le prendo fini e me le trovo tamarre" (I pick them refined and I find them trashy). This word choice highlights his surprise and admiration for the new woman, who is different from his past experiences, making her stand out as unique and special to him.
Luchè spends this whole song arguing that rushing it is the right call. "Invece di andare piano, sono partito in quarta" (Instead of taking it slow, I took off in fourth gear), he says, and then admits he wrote "Oggi Sposi" (Just Married) in block capitals on the number plate. She tells him he is going too fast and asks whether he believes in karma. His answer is "Ho detto sì, mentre controllavo se avevi un tanga" (I said yes, while I was checking if you had a thong on), which tells you how seriously the karma question landed.
The title line, "Non abbiamo età, abbiamo già vinto" (We have no age, we've already won), is the argument in six words: refuse to count the time and you can never be late. The compliments that follow are half confession, "Sei la mia marijuana tu mi calmi, tu mi fai viaggiare" (You're my marijuana, you calm me down, you make me trip) and "Sei il mio nirvana, ma senza le chitarre" (You're my nirvana, but without the guitars). Then the bridge finally hands her a line of her own, "Non ce n'è un'altra com" (There's no other woman like), and the chorus cuts her off before she can finish it.