Sibling property rules
1. if i like it, it's mine.
2. if I'm holding it, it's mine.
3. if i can take it from you, it's mine.
4. if i had it a little while ago, it's mine.
5. if I'm chewing something up, all the pieces are mine.
6. if it's mine, it must never appear to be yours anyway.
7. if it looks just like mine, it's mine.
8. if you saw it first, it's mine.
9. if you are playing with something and you put it down, it automatically becomes mine.
10. if it's broken, it's yours.