Dandines comes from the verb "se dandiner," which means to sway, wiggle, or waddle from side to side in a playful, self assured way, the kind of relaxed swagger someone shows when they feel confident.
In the song, the line "tu te dandines" (you wiggle) describes someone moving with exactly that carefree, flirtatious confidence, drawing attention without even trying.
Fifty Sixty is Alizée’s playful time capsule that sweeps us into the kaleidoscopic world of a pretty sixteen who blossoms into Andy Warhol’s newest pop-art muse; wrapped in Chanel, twirling to early pop as flower power fades and punk or techno have yet to be born, she chases fame and fortune beneath the flash of a Nikon, believing every flattering word the art-scene whisperer tells her. The lyrics sparkle with name-drops of Velvet Underground, Nico, Lou Reed and the East Village, mixing French chic with New York cool to paint a portrait of youthful innocence dazzled by glamour. While the beat invites us to dance, the song gently reminds us that trends evolve and scenes move on, yet a single Polaroid can freeze a moment forever, leaving beauty and desire suspended in time.