He did not do anything wrong. She just likes torturing him.
Pay close attention now, see this? See how easy it is for me to torture him?
This is proof that girls are better than boys. So no matter what they say, no matter how much they make fun of you for not being able to pee standing up or not knowing what having a boner feels like, just remember this moment.
Never let a man belittle you for being a girl and not having a penis. Remember that his balls make him weak, and you can control him in the palm of your hand.