Those Wait Wait guys find the funniest stuff. The Kissinger book is the perfect touch. From NPR–

We found an intriguing recipe on the Internet, creating a classic Elvis sandwich (peanut butter, honey and banana with bacon) using matzo in place of white bread. As Passover draws to a close, we decided to try one.

Ian: Just as Moses led the Jews out of Egypt, this sandwich led the skinny Elvis into being the fat Elvis.

Peter: Evidence Elvis was a secret Jew? One, he loved his mother. Two, this sandwich. Evidence he was not a Jew? Everything else he ever did.

The recipe is from Matzohbox.com Wish I had THAT url!