The (sanitised) version my father used to recite was:

'Twas Christmas day in the workhouse,
and the walls were whitewashed black
along came father christmas
with his sack upon his back.
Up spake one bold rascal
with a voice as bold as brass
I don't want your christmas pudding...........
stick it on the next man's plate.

I have to say it actually scans better than what MAY have been the original version