Young White Girl Syndrome 

n. the psychological condition of being excessively opinionated or critical, considering one's intelligence. While neither 100% ubiquitous nor exclusive to young white girls, it is most common among them.

"She kept bitching about the temperature in the restaurant and kept sending her food back."

"Oh, I know. Bad case of Young White Girl Syndrome that one."

Young White Girl Syndrome by Ben Heddon March 28, 2015