Are there any particular buzz words in Back Page ads which clearly indicate that BBBJ's are on the menu?

"Posting Rules

You agree to the following when posting in this category:
  * I will not post obscene or lewd and lascivious graphics or photographs which depict genitalia, actual or simulated sexual acts or naked images;
  * I will not post any solicitation directly or in "coded" fashion for any illegal service, including exchanging sexual favors for money or other valuable consideration;
  * I will not post any material on the Site that exploits minors in any way;
  * I will not post any material on the Site that in any way constitutes or assists in human trafficking;
  * I am at least 18 years of age or older and not considered to be a minor in my state of residence.

Any post exploiting a minor in any way will be subject to criminal prosecution and will be reported to the Cybertipline
 for law enforcement.

Postings violating these rules and our Terms of Use are subject to removal without refund."

There's also a whole list of words they will edit out of ads. Including, but not limited to, young, college, girlfriend, GFE, etc.
They'll also refuse to post images which don't violate their posted terms sometimes. It all depends on which staff member is reviewing the post, and their personal interpretation of their rules... I've had times where an image I've used for months doesn't get posted, but then days later when I do another ad it will be posted, but another image which was in the previous ad won't. They're very inconsistent. They're a real pain in the ass to deal with, but sadly they get the most traffic.