Priest: Next Sunday, i'll preach about the sin of lying. To understand more, I want you all to read Mark chapter 17.
(the following sunday...)
Priest: How many of you had read Mark chapter 17?
(almost everybody raised a hand...except for a guy who is dressed like a gangster...)
Priest: Why my son? you haven't read what I told you?
Guy: Well, I can't seem to find the 17th chapter.
Priest: (smiled) Mark has only 16 chapters. Let's now proceed with the sermon on the sin of lying....