Clam Chowder sang a third verse to the song. Their version was on one of their early albums - "Special Order", and it is out of print. Unfortunately, the song has not been included on their recent CDs that were compilations from their earliest albums. A real pity.
Anyway, here is the third verse, transcribed from Clam Chowder's version:
Now the seasons spin on by Like seconds on this ship And I'll take another pull From the flask that's at my hip The might-have-beens and the never-weres Can drive a man insane So I think I'll stay out in the void 'Cause Benson's not the same