To lay a bottle on its side-after drinking its contents-to collect the few remaining drops, which can then be poured (or dribbled) into a glass. Also, to "make the bottle confess"
From Scottish (see John Jamieson's Etymological Scottish Dictionary, 1808). Now obsolete.
Grandpa Tony is always sure to duffifie after finishing his wine, proclaiming, "If it's enough to take a pill with, it's enough for me."
A fictional spokesman for the beer company:
"Duff".
He represents all that is malty
and alcholic.
Tends to do alot of thrusting
to the song "Oh yeah" by Yello.
The simpsons.
"Duff man is thrusting in the direction
of the problem!"
"Duff man can never die,
only the actors who play him!"