Compliment a lady ?

What would you do in this case?

Friend and I was in town in his car with the windows rolled down. We was at a red light and this very attractive gal rolls up beside us. My friend says "Hey man holler at her or something!" I say "No thanks..... I don't won't to be so redneckish!"

I mean I guess I could have but it seems kind of inappropriate for someone be hollering "Hey good looking!" knowing good and well she is going to give me that look..... you know the look that means "Go F*** yourself!" I don't think I need to set myself up like that. What you guys think?