A better idea: since the Left like to throw "science" in our face as an answer to everything, start labeling the bathrooms XX and XY. Regardless of how one identifies one's gender, you literally can never change the orientation of your chromosomes.
Heads would explode the world over.
“...Start labeling the bathrooms XX and XY. Regardless of how one identifies one’s gender...”
You want an XY who thinks they are XX and likes XYs to share toilets with your grandson?
Normal heterosexuals have rights too. Let the diseased share a rainbow toilet.