Vraille Darkfang said:DM's How do you enforce a PG-13 gaming code at your tables?
(snip)
If Bob can't show any couth, Bob can find another group to play with.
As for the kids, talk to their parents. Tell them a subject came up at one of your games that made you uncomfortable, and which you're sure confused the boys. Explain what the subject was, and make sure to tell them you found it distasteful.
Tell the children themselves that sometimes people do things that get them killed. Go ahead and get graphic, compare the typical equus phallus with the typical human colon, and how one can make mincemeat of the other. Then tell them you hope they're not so dumb as to try it. Might be best if you did it in the presence of their parents.
Kids have more on the ball than we think. At the same time, it's easy to confuse them. You have to explain things clearly lest they get garbled information from another source.
At the same time, parents have a talent for thinking the worst when it comes to their kids. Explaining things clearly to them is just as important. Make clear that you know of the story, that it did not happen in any of your games, and that you disapprove of such activities. You may want to have them sit in on a game, so they can see what's going on. And getting chastised by an irate mother might wake up Bob.