I had this friend, when I was into horses, who was the world's expert on hiding stuff. She'd either say it was mine, and she was just borrowing it, or I'd sold it to her really cheap, or "Oh, I've had that _forever_, I can't believe you've never seen it!" I mean, she could sneak in saddles and everything!

Her best sneak, though, was a bigger, WAY better diamond for her ring. (Oh, how she got money was "gleaning," like she'd write a check at the grocery store for more than the amount, and save the money). So she gets the super-diamond, and has it put in her ring, and her _dad_ notices, and she says (this is great!!) Oh, I just got it cleaned, doesn't it look better?"