Last week I had met a guy who was a friend of one of my friends. He had shaped his head but it was obvious enough that he was completely bald all over his head, so he was NW7. I was surprised to hear that he was only 19 years old!!! This is probably a Guinness record. I havent seen something like that before. I started losing my hair around 20 and now I am NW2 but I cant imagine someone going to school and being NW5-6 or something like that... Thats not called aggressive male pattern baldness, its called aggressive (or even barbarian) act of nature towards the man.