The one and only one event comes to mind = 1974 I was in Cincinnati OH ghetto fuck mostly black junior high school that was back in the "bussing" days bringing white kids to ghetto and black kids to white neighborhoods. I have in mind a flaming hot girl I really liked and wow did she like the boys. One day at playground recess I told her I'm off to pee and she said "I'll join you" and at the standup pisser in the boys room I was a bit shocked/amazed she was standing right next to me, unzipped jeans, reached in to aim pussy and she pissed just like me. The shock I had was that I did not know girls could do that I thought they all had to go sit down and nope. But answering the real question here is "of course not" this entire "trans" movement only started up just a few years ago when adults commenced to encouraged and rewarded it.