Do you get along with your friend's siblings? I had a friend growing up that was always at odds with another of our friend's little brother. Well once my other friend's little brother started into video games, Final Fantasy specifically, he loved to walk in on him playing the game and tell him what was going to happen ahead in the story, just to get him riled up. Of course one of the biggies was (SPOILER)when he told him during FFVII "Dude, why is Aeris in your party, she's going to die".
Anyway, any good friend vs. friend's sibling stories or you vs. friend's sibling stories?