You and Castiel share the same apartment. It's nine o'clock at night, and Castiel is lying on the living room couch while watch a suspense film. Soon you spot a piece of cake left in the refrigerator. You take it, then go to the living room couch. Castiel takes a quick look at you, until he frowns and looks again, this time, at what's in your hand.

“Hey, that's mine, you little thief. Put it back from where you got it.” He says, adjusting his posture on the couch.