Source unknown.

This bishop invites a young priest over for dinner. During the meal,
the priest cant help noticing how attractive and shapely the
housekeeper is. Over the course of the evening he starts to wonder if
theres more between the bishop and the housekeeper than meets the eye.
Reading the young priests thoughts, the bishop volunteers, I know what
you must be thinking, but I assure you, my relationship with my
housekeeper is purely professional.

About a week later the housekeeper comes to the bishop and says,
Excellency, ever since the young Father came to dinner, Ive been
unable to find the beautiful silver gravy ladle. You dont suppose he
took it, do you?

The bishop says, Well, I doubt it, but Ill write him a letter just to
be sure. So he sits down and writes: Dear Father, Im not saying that
you did take a gravy ladle from my house, and Im not saying you did
not take a gravy ladle. But the fact remains that one has been missing
ever since you were here for dinner.

Several days later the bishop receives a letter from the young priest,
which reads: Your Excellency, Im not saying that you do sleep with
your housekeeper, and Im not saying that you do not sleep with your
housekeeper. But the fact remains that if you were sleeping in your own
bed, you would have found the gravy ladle by now.