Which sentence uses humor in this excerpt from charles farrar browne's "interview with president lincoln"?

"Mr. Linkin, who do you spect I air?" sed I.

"A orfice-seeker, to be sure," sed he.

"Wall, sir," sed I, "you's never more mistaken in your life. You hain't gut a orfiss I'd take under no circumstances. I'm A. Ward. Wax figgers is my perfeshun. I'm the father of Twins, and they look like me--BOTH OF THEM. I *** to pay a friendly visit to the President eleck of the United States. If so be you wants to see me, say so,--if not, say so I'm orf like a jug handle."

"Mr. Ward, sit down. I am glad to see you, Sir."

"Repose in Abraham's Buzzum!" sed one of the orfice seekers, his idee bein to git orf a goak at my expense.

I think believe it would be last sentence of the excerpt - You hain't gut a orfiss I'd take under no circumstances.

Repose in Abraham's Buzzum !" send one of the officers seekers.