I think just a simple "reminder" to be or act as a grown up when it comes to respect issues would be in order. There are a few young kids in here and im guessing that is ok for most, however if they want to stick around, they need to adapt to being respectful and discreet about certain things.
Now I know (im guilty of this) of making smart assed remarks about people, making inuendos here and there but its all in good fun and within a certain level of respect. That being said it there is a thin line of playing around and joking and simply being crude and rude disrespectful to others.
Now i magine there cannot be a specific set of rules for every thread like tim said but just a simple community wide reminder something along the lines of:
"HEY! you keep yiour trap shut ya hear, if you a'int got nothing good & RESPECTFUL to say without sounding like a douche then you need to move on little fell'er!!"