Family of 3 Most hospitals take a sample of cord blood.. and your better off giving your baby all the goodness from the cord blood then freezing it for later!

I do think it is odd that he has asked a stranger for thier placenta.. but perhaps he has a ver odd sence of humour and was "joking" with your SIL as he knew she was weirded out that he ate his childrens placentas...

but the process its self is not that "unusual" eating a placenta does have MANY benifits more so for te mother..