Pupetta is a charming and affectionate diminutive of pupa, meaning 'doll'. It's a term of endearment, similar to 'sweetheart' or 'baby doll' in English.
In "Pronto Pronto," Adriano Celentano uses pupetta to address the woman he's calling, immediately establishing a playful and tender tone. It's a less common, more endearing term than a simple 'cara' (dear), making it memorable and unique to the song's flirtatious charm.
Adriano Celentano sings a lighthearted, flirty phone call to a girl he wants to see tonight.
He calls her pet names like pupetta and lupetta (little doll, little wolf cub) and invites her out dancing, promising to hold her, kiss her, and shout with joy once she says yes.
The chorus repeats his promise that he will be hers alone, always, and completely (solo tuo, tutto tuo, sempre tuo sarò). It is a simple, upbeat love song built around one insistent question: will you come out with me tonight?