Why would they ask such a question?

through my high school times until now there is like 2% of the population that asks such foolish questions. In high school it was girl that think so highly or themselves that would talk to each other about me and asking it I’m a girl or a boy. I realize up until now it’s only females that ask such stupid questions. Guys automatically know I’m a girl. Plus I get compliments from the guys too. That makes me just more insecure about my looks. People judge me for no reason even as adults. Like what is wrong with people.
Why would they ask such a question?
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