Now that's an interesting one ...

A recent CNN article describes an unusual ethical situation: while having an affair six years ago, a woman may have saved sperm from oral sex and inseminated herself with it; she subsequently filed a suit for child support and won. The man is now suing her for both theft and emotional distress.

An appeals court has agreed that he can sue for emotional distress, but not theft because

"'She asserts that when plaintiff "delivered" his sperm, it was a gift -- an absolute and irrevocable transfer of title to property from a donor to a donee,' the decision said. 'There was no agreement that the original deposit would be returned upon request.'"