Did ya know they call white people Crackers?

My dark skinned 13 year old (white dad and Indian mom) came home from school recently and asked if I knew that black people called white people "Cracker". I laughed and told her that, in fact, I'd been called as much many times. Her inquisitive wrinkled eye brows turned to a giggle as she said, "guess that makes me a 'Graham Cracker' ".