It is AFAIK a WW1 song the version I have always sung goes


Christmas day in the Cookhouse

It was Christmas day in the Cookhouse,
The happiest day of the year,
Mens' hearts were full of gladness,
And their bellies full of beer,
Then up stands Private Shorthouse,
His face as bold as brass
Saying "We don't want your Christmas pudding
you can stick it up your..
Tidings of comfort and joy,
Comfort and joy,
Oh, tidings of comfort and joy


It was Christmas day in the harem,
the eunuchs were standing 'round
And hundreds of beautiful women
were stretched out on the ground
Then in walked the bold, bad Sultan
and gazed on his marbled halls
Saying "What do you want for Christmas Boys?"
And the eunuchs answered...
Tidings of comfort and joy,
Comfort and joy,
Oh, tidings of comfort and joy