Hassan and Hassana Share Everything

Hassan and Hassana are twins, and they're practically identical. Even though one is a boy and the other a girl, ever since they were babies people have had trouble telling them apart. For their 8th birthday, Hassan gets a bike and Hassana gets drums. Hassan's friends tell him that girls can't ride bikes, leaving him with an important decision to make. Will he decide to share or will he let Hassana feel left out?