I suppose by the time you're 20 you have some idea about whether you'll be hairy or not. But there are surprises as you grow up.

I remember thinking that I was going to be very hairy because I was the first boy in my class to have hairy legs, but in fact after about 16, that was the end of hair development, so even now I have no hair on my chest, unlike my father or mother's brothers.

So you may not turn out particularly hairy afer all.