I grew up an overly-sensitive, frail kid spending all my time drawing, reading, listening to music, daydreaming. My father loathed me. My only friends were practically all girls (though if the old man had known the games I played w/ them, he would have been re-assured I guess. Man, I had all the girls of the neighbourhood to myself because the rest of the boys didn't care for girls at that age!).
All in all, I didn't like the typical boy stuff and didn't get along with boys all that much.
My little brother was the exact opposite of me - and all that my dad had ever dreamed of in a son. He was bigger than I ever was, confident, extroverted, dug all the classic boy stuff, the Rambo movies, anything with Schwarzenneger in it, he dug biking with his friends, going out, going hunting with my dad.
As it turned out, I went on to become quite the ladies man (if I may say so in all humility) while my brother eventually "came out of the closet".
So much for the norms.