Two Snakes

My cousin is going to give birth soon in July. It is two months more to go. I received a call from her, she told me that she will go for pregnancy check-up and will go to buy MamyPoko at Tesco.

I asked her whether did doctor scan the baby ? She told me that the baby is girl. Before she told me, my mother said the baby is girl, I wonder why my mother will know it..My mother said, if two snakes get married, mostly will get girl baby. My mother's sister ( my aunt)is snake and her husband is snake too, and both of them have 5 daughters and non of son. My sister in law is snake and so do her husband, and they have 2 daughters as well. Now my cousin who is going to give birth, she is snake and so do her husband, and they will get a girl baby soon.

You might think that it is coincident, but i strongly believe to the old folks which two snakes get married and the possibility of getting daughters is higher than sons.