Anyone have a good sibling rivalry story?

Heres mine. Im 15 and my little sisters 13. She took tjitsu and was very athletic. I was also athletic but stronger than her. She thought she could beat me in a fight. I accepted and the terms were no kicking or punching and loser had to do something embarrasing or get something done to them. I won by bullrushing my sister then putting her in a camel clutch. She submitted so i won. I then gave her a wedgie and hung her on her door till she peed herself. We never actually hated each other but i loved to mess with her. Please post you own funny stories.