Green’s Dictionary of Slang

freshie n.1

[colloq. fresh, cheeky, forward]

(US) one who is considered sexually or verbally forward.

[US]Van Loan ‘The Pearl Brooch’ in Taking the Count 251: Quit that, freshie [...] I don’t let a man kiss me until I’m acquainted with him.
[US]F. Hurst ‘White Goods’ in Humoresque 130: Say, and ain’t you a freshie!