07/02/2014 06:43 pm ET Updated Jul 04, 2014

Joan Rivers Reveals Which President Barbara Walters Said Was The Sexiest

When Joan Rivers stopped by HuffPost Live to talk about her new book Diary of a Mad Diva, the conversation turned to television icon Barbara Walters.

Rivers praised Walters as a "piece of history" who has "sat at the right of presidents" and isn't afraid to say what she really thinks of someone. The veteran comedienne added that Walters once told her who was the sexiest president she ever met, and, as Rivers put it, Walters' choice will "blow your mind."

Check out the video above to see which president Walters thought was "very sexual."