[quote="Catholic, post:16, topic:200030"]
The canon confused me a little bit, because it seems that the commandments encompass more than just the specific sin they identify. If a priest engaged in sexual relations with an unmarried woman, it would not technically be adultery, but fornication, yet it seems that Canon 977 would still apply. That's why I wondered about whether a dirty joke would fall under the same category, since it seems to be a sin against the 6th commandment from what I have read.
Again, please do not take this as a challenge to your previous post - I am just interested in putting this to rest and welcome any comments that might correct my reasoning.
I understand your concern, and I think it bears defining a couple terms more clearly.
First, "accomplice". Without looking at a dictionary, it seems to me that accomplices must collaborate, meaning they have to plan their act, and express mutual consent. You didn't know that he was going to tell that joke beforehand, and so he did not have your previous consent, and so you were not acting together. I think that an accomplice relationship involving a dirty joke would have to be one of you imposing on the other to tell a dirty joke. Following from this point, it is entirely possible that there are two separate sins here, but not an accomplice relationship.
Secondly, the types of sins that are covered under Canon 977 are mortal sins, since these are the only sins that require sacramental confession. Laughing is subconscious, and so does not meet the criteria of full knowledge or full consent of the will. So, if you sinned at all, it was a venial sin.