This only works when the lady in question is wearing the type of shirt that shows her full back.

"Excuse me Maam, do you realize you have your shirt on backwards?"

"Hey, how are you doing? I work for Frito Lay and you look Hungry, what are you willing to do for some cheetos?"

"I am a blind fortune teller; I do not read palms, just boobs, want me to look into your future?"