A milkshake created and drunk by Beatrice Middleton's best friend, Florence Rogers, known to her as "Flo". They most often drink it after a Silver Sneakers class has taken place. It's made of blueberries and several other fruits and based off of chocolate milk.
Beatrice: Whoah, that Silver Sneakers class was a killer!
Flo: You know, I'm in the mood for something creamy. How about a Florence Freeze?
Beatrice: Now you're talking! You know I like that.
Flo: This is a hit. It's gonna go all over the world!