sand roller
Simply put, a girl who wears excessive amounts of make-up almost as if she "rolls" in it every day. Usually a simple-minded prep.
"Man dat girl sexy, want me summa dat, OMNOMNOM."
"Nah, she's just a sand roller. Look how much make-up that prep has on."
"Nah, she's just a sand roller. Look how much make-up that prep has on."