My mother had wanted a girl, and she had to wait through four pregnancies before I fulfilled her wish. I grew up with the understanding that girls are special. And I wanted my own special girl. She looked at my bulging tummy. It was pointed, indicating a boy.
Boys have pointy bums.
I should have known that. Girls have rounded bums. It should have been common sense. I have been watching the shape of pregnant tummies for the last 37 years and have accurately predicted the gender of every child months before the delivery. Here is a tale which I picked up from a German immigrant neighbor who accurately predicted the exact adult height of all her children, two boys and two girls.