I have an unusually large head. It has been the subject of jokes since I was a child. I have a niece who was called the “head baby”. My youngest grandson has a head size that his pediatrician said was in the 99th percentile in head size, but that there was nothing wrong with him.
There is natural variation in head sizes, and certain ethnic groups tend to have larger heads. “Macrocephaly” is often a symptom of other conditions. Benign familial macrocephaly is an inherited condition. Some families are predisposed to having larger heads.
None of us is particularly tall or big. The primary disadvantages other than people sometimes making fun of us, are that it can be difficult to find helmets and hats that fit properly and that we are top heavy. As a kid I was often banging my large head against something.
I wear a 7-3/8 hat size and it’s snug. Is that ‘big’?..............