Nigel, the line 'When we get home etc' is a line used in one of the many versions of 'M.V. Hardship'....

             The Bosun cried "smoko"
             The lads said "right o"
             Then down the gangway
             Shoreside did go.
             The Mate he stood screaming
             That we'd all get the sack
             But we don't give a damn
             'Cause we're not coming back