V. 2 of "Christmas Day in the Cookhouse" from "Oh What A Lovely War," p. 50 of acting edition.

It was Christmas day in the harem,
The eunuchs were standing round,
And hundreds of beautiful women,
Were stretched out on the ground,
When in strode the Bold Bad Sultan,
And gazed on his marble halls,
Saying,'What do you want for Christmas, boys?'
And the eunuchs answered...

All. Tidings of comfort and joy, comfort and joy,
Oh, tidings of comfort and joy.