duff

(see also plum duff)

To enhance the value of Sunday to the crew, they are allowed on that day a pudding, or, as it is called, a "duff." This is nothing more than flour boiled with water, and eaten with molasses. It is very heavy, dark, and clammy, yet it is looked upon as a luxury, and really forms an agreeable variety with salt beef and pork. Many a rascally captain has made up with his crew, for hard usage, by allowing them duff twice a week on the passage home.

- Richard Henry Dana Jr., Two Years Before the Mast, ch. 4

Plum Duff chromosomes - mmm, mmm, yummy!

And the reasons are legion. They vary
from inherited duff chromosomes
to car-crash damage and breakdowns...

- Peter Reading, There seem to be so many of them,, from Tom O' Bedlam's Beauties, 1981

Indeed it would!

Actually I like the "backside" definition of duff.

Duff on one's duff would be rather disturbing.

Goodness gracious!

Oh (relief) I thought you said "On one's backside."

Or one's backside. ;-) The mother of a friend of mine used to get her kids moving by telling them to get off their duffs.

Organic matter on the forest floor.

pass counterfeit goods