Perhaps the key phrase in the CCC account is “and the harm suffered by its victims”. Who is the victim of a lie to the Nazi war machine, or to a Chinese secret policeman looking to arrest secret Christians? I do not believe that there is a moral victim when such are lied to, so I do not believe the eighth commandment comes into play at all.
I whole-heartedly agree!
I think when we disclose information we need to be aware of the consequences (Prudence) to be sure that no-one will be hurt. We need also to aware of our intentions. Is it our intention to deny truth?
I think in the case of Lying to the Nazis or the Chinese secret police your intention is not to deceive, but instead you are being forced to. otherwise you are aiding then in a greater evil.
You have no moral obligation to disclose information. You do on the other hand, have a duty to protect life (from conception, to natural death) and to defend the weak.
Someone put it like this “People do not have the right to information about another, when they are neither part of the problem or the solution” ( I suppose you could also apply this to gossiping too!)
On the issue of Joking; I think you need to ask yourself if it is you’re intention to decieve?
I think humour is a gift that can be use to build people up, of to knock them down! Like all gifts, we can use it for good or for bad. on the subject of sarcasm, i believe it can be used to help people laugh at there faults and not to take themselves too seriously. But again it can be used as a wepon to hurt them. We need to be careful! If our words are intended to cut somone (even a small bit) then they *will *bleed.
Before I came to know the Lord, I had a really wicked sense of humour! People were scared to be the butt of my jokes because they cut so deep, yet still the people I would hang out with would laugh. So I would continue.
Now that I Know Our Lord, He has shown me how to use this gift for Him, to build up His kingdom and His people and to help people laugh at the silly things they do.
Humour is a gift from God but be sure that your intentions are “Jesus oriented” and you’re not using it for your own gain (ie to get 1up on someone)
Telling stories is great.

Telling stories and pretending that they’re real is not! :tsktsk: It’s deception, and can be very confusing for young children.
Kids are great, they believe what adults tell them, and they are suposed to! It is very easy to explain the diffrence between “story things” like faries, elfs and santa clause and “real things” like Jesus, Mary and the Angels.:angel1:
Hope this helped answer your question
God bless!