I've added this to the original post:
Fourth - Sexually Oriented Content. We're not going to delete every post with the word "penis" in it. But if you cross the line of common sense, of what's acceptable and what isn't, then it's going to get deleted. Ultimately, this is the most subjective rule (the alternative is to ban all sexually oriented topics, which I'm sure isn't the wish of everybody as a whole), so if you have doubts, don't post it, or PM me first.
This was from a couple of years ago, but I'll bite:
Is this a rule Dave asked you to post, or is it one you came up with?