(NSFW) What words, phrases, and/or topics of discussion should we consider "Not Safe For Work"?

Before anyone says “none of them”, be aware that there will likely always be a NSFW policy in place at Fluther, requiring titles that are ‘safe for work’ and advance warning when the details are not.

We’re trying to refine our policy, and would really appreciate your input.

What words actually trigger work computer filters? What types of things are likely to get you in trouble if your boss, customer, or child is looking over your shoulder? By trouble, I mean things like getting reprimanded or fired at work, or prompting an uncomfortable and/or ill-timed discussion with your child.

Some issues we’ve thought about:

The word “sex” is tricky, as it can be about sexual activity or gender. Is “sex” in a non-sexual context safe for work, or would it still cause problems? What about the word “sexy”?

In using a euphemism for “sex” in the title, are things like “intercourse”, “copulation”, “getting laid”, and “fornication” acceptable, or no? (Currently, we lean toward “intimate relations”.)

In using a euphemism for “porn” or “porno” in the title, is “X-rated” or “XXX” ok? (Currently, we suggest “adult films” or “adult entertainment”.)

Straight lists of words, phrases or topics of discussion are good, but feel free to add any other thoughts you’ve got, too.

Thanks, jellies!