The principle of mine

If I like it, it's mine.

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

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

If I say it is mine, it's mine.

If I saw it first, it's mine.

If you're having fun with it, it's definitely mine.

If you lay it down, it's mine.

If it's broken, it's yours.