I begin to regret now, Duff, that I did n't take your advice.
It is a vulgar crime, Duff; it would be very hard to stoop to it.
Don't boast of it, Duff; even notoriety is not always a cheap luxury.
The blame was thrown upon "Duff" Armstrong, who was arrested.
The other two volumes by Mr. Duff are also of the greatest assistance.
He who first got outside his "duff and ...