A Legal Jam

My legal training sometimes comes in handy in resolving domestic disputes...

The Enchantress: Don't you eat all my Powidl.
Me: I didn't eat all your Powidl.
The Enchantress: Well, don't.
Me: I didn't. Hey, and you already had a lot of the Powidl.
The Enchantress: Well, it's my Powidl. My dad brought it for me.
Me: Honey, we're in California. California is a community property state. We obtained the Powidl in the course of our marriage. Therefore, the Powidl is community property.
The Enchantress: [Pause] So that means I can use your guitar then.
Me: Er...

...but not every time.