Our society gets sillier and sillier.
I remember when we would go out into the shop and find that our female dachshund had gifted us with a litter of puppies. One by one, we would pick them up and turn them over. If they had a little rosebud between their legs, they were girls. If they had a little thing protruding from their bellies, they were boys. It was a simple, but accurate test.
A similar test is applicable to human babies: look between their legs and the answer is clear.
Apparently this test has been lost along the way.
Regards,
Russ