Is it okay to steal a pickle from a family member's plate?

The other day I ordered a turkey club sandwich for lunch while my father ordered a salad. Our table's napkin dispenser was running on empty so I went to grab some and when I returned my pickle was gone. I could have sworn that it was beside my sandwich moments before. Hmmmm... "Did you take my pickle?" I asked. My dad denied having anything to do with it.

I could have just order a side of pickles but for some reason, perhaps visiting-home-induced immaturity, I couldn't let it go. I took a bite of my club, smiled fake-politely and said, "I know you took my pickle."

Is it legit to take a family member's one and only pickle? I'm on the fence. On the one hand I think I owe him my pickle. After all, he did raise me! On the other hand I think a pickle should be considered non-poach-able.