Like Bill Clinton or not, is it appropriate for the FLOTUS to make fun of him?

The Clintons and the Obamas like one another about as much as the Hatfields and McCoys.

SSgt Alex Robinson I have no problem when anyone makes fun of Bill Clinton.

I don't watch Colbert so I missed the exchange, but depending on how the comment came about, there is so much material when Bill Clinton's name comes up, it's kind of unavoidable.