He straightened up. "Your chief trouble," he said, not offensively, "is that you think you've got a sense of humor. It confuses people, and you ought to get over it. Things strike you as funny. You thought it would be funny to have a talk with Rackham, and it may be all right this time, but someday something that you think is funny will blow your goddam head right off your shoulders."
Only after he had gone did it occur to me that that wouldn't prove it wasn't funny.--Rex Stout, In the Best of Families
I know so very well where he's coming from!
PS: Speaking of Rex Stout, check out his essay "Watson Was a Woman."