Always Wondered - What Happened to "B" Size Batteries?

In this episode, why do we have tonsils?  Are they the body’s first line of defense from infection?  Or are they just hanging out in the back of your throat catching stray popcorn kernels?  We have the answer.   Also, you’ve seen AA, C, and D batteries.  But whatever happened to B?  Did it vanish into witness protection - or was it something else?  We’ll solve the high-tech mystery.  Plus - learn the surprising (and possibly painful) origin of the phrase “light a fire under someone”.  Join host Rick Peterson as he answers more of the questions you’ve Always Wondered about.