My 6-year-old son wanted to wear a sparkly purple backpack to school. He loved it and had picked it out himself. On the second day, he came home and asked me to return it — some boys said it was 'for girls.'
My 8-year-old daughter played on a coed soccer team and was one of the stronger players. The boys kept telling her she 'runs like a girl' and wouldn't pass to her during practice, even when she was open.