Skull theory

[user1479150521]

Hi everyone
So we had our 12 week scan yesterday and I was expecting to be all emotional but instead my little bean had me in stitches! It was rolling around on its front, back, upside down, opening its mouth, putting its hands behind its head and chilling out, putting its thumb up. It was amazing to see such a wriggly baby & this is my first after trying for 4 years so I'm bursting with excitement.
Anyway to the point I have seen people talk about skull theory and other theories what's everyone thoughts on the little bean?

Oh congratulations! Glad all was well at your scan! I can't see the nub very well but based on skull shape I'd hazard a guess you have a little boy!

*absolutely no scientific basis on this hehe!

Quite a flat skull, I am guessing boy also.

Boy

My thoughts exactly!

I've been reading up on this and unfortunately my scan leaves a lot tonne desired. I wild definitely go with team blue here! X

Hi I had my 12 week scan today and someone mentioned to me about the skull theory so just out of Curiosity I thought I'd give it a try! Here's my scan girl or boy?

Any guesses on gender based on skull theory?

What is the skull theory then? X