Hypocrite Oath
When people divorce things sometimes get a little unpleasant. Especially on the 'who gets what' side of things. Often if there is some animosity, there can be a degree of deliberate cruelty in taking something you know your soon to be 'ex' really values, even if you don't want it yourself.
However, while you might be thinking about CDs, pictures or silverware, one Dr Richard Batista (America) has taken things to a whole new level. He is demanding his wife returns the kidney he donated to her. Yes, he wants his kidney back.
The anatomy of greed
Presumably if she gets custody of the children, he is going to ask that the Y chromosomes he contributed to help produce them be extracted and returned to him in a jar labeled 'idiot'.
Of course he doesn't want the kidney back, he's using it as leverage to sue for more money. So I think she should call his bluff. She should leave the kidney outside his house on a plate (assuming he doesn't have a dog) and knock on his door. I'm sure the look on his face when he opens the door will be priceless, giving her a burst of hilarity and vital moral victory as her body starts to shut down.