The lyrics quoted are an adaptation of MISS FOGARTY'S CHRISTMAS CAKE, words and music by C. Frank Horn. It can be found as old sheet music at the Levy website. It is also in the Database, but does not credit C. Frank Horn.
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There was plums and prunes and cherries,
And citron and raisins and cinnymon too,
There was nutmeg, cloves, and berries,
And the crust it was nailed on with glue.
There was carroway seeds in abundance,
Sure 'twould build up a fine stomachache,
You would kill a man twice after 'ating a slice
Of Miss Fogarty's Christmas Cake.