If I like it, it's mine.

If it's in my hand, it's mine.

If I can take it from you, it's
    mine.

If I had it a little while ago, it's
    mine.

If it's mine, it must never
    appear to be yours in any way.

If I'm doing or building something, all the pieces are mine.

If it looks just like mine, it is mine.

If I think it's mine, it's mine.

If I saw it first, it's mine.

If you are playing with something and you put it down, it automatically
    becomes mine.

If it's broken, it's yours!