When I was a kid, we played baseball a lot.
One day my friend Ron was pitching and I noticed that when an opposing batter batted righty, Ron pitched right handed.
When a batter batted lefty, Ron switched his glove to his right hand and pitched lefty.
And he pitched equally well with both hands!
After the game I said to him, "Hey, Ron, I didn't know you were ambidextrous". He gave me a puzzled look and said," I'm not. I'm Catholic."
True story.