Characters
Who would have believed it; you, an IRS agent?
— Drew · Meet Joe Black
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker expresses amused disbelief that the listener works as a tax agent. The rhetorical question suggests the job seems an unlikely fit, and the phrasing may carry teasing surprise, though the words alone do not say whether it is fond or pointed.
Context reviewed