She pointed.
"Could you please tell me in words?" I requested politely. "I have a perceptual disability, and it's hard for me to tell just where you are pointing."
"Well, tough on you!" she snapped in a VERY nasty voice, and walked away.
I followed her, tapped her on her shoulder, and responded. "You are right. You're absolutely right. It is tough having a handicap that people don't understand. But do you know what makes things so much tougher for me?" I looked right at her and answered my own question. "People like you."