This article in The New Yorker reminds me of incidents that take place occasionally in the after school enrichment classes on chess that I teach.
During the last half hour, the students are allowed to play chess against one another.
Sometimes, when a boy is defeated by a girl, he will exclaim, "I can't believe I lost to a girl!"
At that point, I tell the boy of a chess tournament in New York City where I lost games to Hana and Amanda, two strong female players.