Is it normal or acceptable for a 14 year old boy to have a slight obsession with weapons? He is a friend of my son's at school and his parents bought him a (real) samuri sword for Xmas, which he now has in his bedroom on display with his collection of other weapons (throwing knives, tasar). Is this normal? He is such a lovely boy that I am hoping someone will say it's perfectly normal, as i actually like my son being friends with him!