A world to define ones '
gender' not
sex.
Boys do not need to have a penis, and boys do not always play sports either. Boys can be feminine, boys can be masculine. If they call themselves a boy, they're a boy, no questions asked.
"Hey, did you hear about
Sarah? She won that super
cool trophy yesterday!"
"Oh, you mean
Ethan? Ye he totally deserved it."
"He? She's a she?"
"No, respect his pronouns, he's a boy. What's in his pants doesn't matter."