Fondoschiena literally translates to "bottom of the back" or "backside." It's a more playful and slightly less common way to refer to the buttocks than other Italian terms.
In the song, the line "E come un'altalena muovi quel fondoschiena" (And like a swing, you move that backside) uses this word to describe dancing and movement in a lighthearted and energetic way. It's an engaging word that adds a touch of fun and rhythm to the lyrics.
Get ready to dance! Giovanni Zarrella's "Fantastico" is a high-energy celebration of a spontaneous and passionate encounter. The song describes an exciting "notte italiana" (Italian night) filled with a "ritmo bombastico" (bombastic rhythm). The singer is completely captivated by someone with "pelle mediterranea" (Mediterranean skin) and invites them to join in a game of love for the night, urging them, "Godiamoci la vita, la notte è infinita" (Let's enjoy life, the night is infinite).
The lyrics capture the feeling of living in the moment, describing the connection as a "battito romantico" (romantic heartbeat). It's all about embracing the fun and adventure of the night without worrying about tomorrow. While there's a hint of uncertainty—"Non so se resti o devi andar via" (I don't know if you're staying or if you have to go)—the main message is to go "al massimo" (to the max) and enjoy the fantastic feeling.