Here is a little story -- a conversation between two Sicilians circa late-19th century. What these two are discussing, is one question, but the more important one is: why. It is an example of why there is in existence one of the Mafia "rules" by which members live their lives.
(Googling any of the names will not help you! Don't Google any of this -- try to use your mind, those of you who think you know Cosa Nostra, that is.)
Man A: Man, does my tooth hurt!
Man B: Mine too.
A: When did the pain start?
B. On Our Lady of Ascension day.