The older ducklings and I were watching this video of trick jump-roping. D2 noticed and observed plaintively that it looked like they were all girls.
"Yes," I explained, "Mostly it is girls who do jump-roping. Like mostly it is boys who do football. And some things girls and boys both play, but on different teams, like basketball. And some things everybody likes to play all together."
He brightened up. "Like Hi-Ho Cherrio!"