When you live in a culture where the birth of a boy is celebrated and the birth of a girl is mourned, why NOT pretend to be a boy?
It happens more than you might think in present-day Afghanistan.
Girls are presented to the world as boys, getting a taste of freedom and respect in a place that has almost none for women.
The Underground Girls of Kabul explores the phenomenon.
Journalist Jenny Nordberg covered the story for the New York Times and wrote the book. She joins us.