The document discusses differences between boys and girls across 15 categories. It notes that only boys can grow facial hair, only girls can have babies, and people usually stare at boys if they wear makeup. Additionally, boys generally have a better chance of passing a driving test, girls have fewer car accidents, and boys' brains are slightly larger on average. The document concludes by stating that overall, there are more girls than boys in the world and that girls tend to live longer than boys.