Terrible things you've done to your siblings

[johnbeans]

I've always really enjoyed witnessing or hearing about a good sibling rivalry. There's just something about brothers/sisters committing atrocities on each other that makes me laugh. When I was younger my sister and I would fight all the time. Whenever she really pissed me off I would secretly scrape her toothbrush alongside the walls of the toilet. This probably happened well over 100 times, and she remains clueless to this day. So, what's the worst thing you've done to a sibling of yours, or if it's especially good, something terrible you've heard about other siblings doing to each other.