It's okay, man -- go ahead and sing it to the undergrads with a clear caveat up front: " THIS SONG COMES FROM 1964. DO NOT TRY THIS AT HOME OR IN YOUR OWN TIME_STREAM!"

LOL!

Then you can put one at the end that says "Please note: No real brain cells were damaged in the performance of this song. Let's keep it that way!!"

I don't know of any other verses, though!!

Regards,

A.