In this case, it's just a little bit conceivable that the "dirty words" in the session title could refer to "things to avoid", like over-releasing objects, exce

In this case, it's just a little bit conceivable that the "dirty words" in the session title could refer to "things to avoid", like over-releasing objects, excess drawing, etc. Or the "dirty words" might be private APIs, which like actual dirty words would get your app rejected by Apple, but might be of interest to people writing for jailbroken devices. So in the case of this session's title, there are conceivable alternate interpretations that a person might hope to be the case. Thus, if a session is going to involve double entendres or ribald humor, it would be best to indicate so in the conference materials, so that attendees can best decide what to attend. (The problem with this would be if session presenters all wound up adding less-appropriate material)