How fucking rude. Girls can’t help their boobs or ass, it grows naturally. Plus, if that’s the only thing that attracts your eye, you’re sick bro. I’m not one to relate to this because I’ve never been called flat, but I know if I ever was insulted like that I’d be very offended. So if you choose to care about her physical appearance like that, don’t be surprised if you get a slap in the face.