I would have done the same with my brother when I was young. I had friends who wouldn't come over because he was so mean. When I got into high school and a friend had a crush on him, I simply couldn't understand it. He was my horrible older brother, how could she posslibly think he was cute....she much have been delusional.
I had a younger brother that I would have hand delivered at one time. He can still be annoying but we get along much better now. Once I convinced him to climb a ladder to the roof of our 2 story home and then I knocked the ladder down and he had to sit up there until mom got home from work. She wasnt very happy.
(Oh by the way I'm 39 and hes 34 now)