Two more verses found on the 'net:

In the arms of girls we'll dance and sing,
For sheoak will be Ruler King.

Drunk! For sheoak's gone to our head,
The girls can put us all to bed. [without fear of being molested?]

Note the capitalisation: sheoak does not seem to be a trademark. My second uninformed guess: slang for cheap beer. Julia, of course, is the barmaid.

Feel free to post your answers where you think they belong. I trust the elves to list all the related threads.