The "report this post" button will only alert the staph assigned to moderate that particular forum.
The next best thing, is to immediately go to the forum index and refresh the page. If any staph are online, PM them with the name of the thread and the forum it's located.
Barring that, just PM any of the staph that you recognize as being online more often than others... You can PM more than one person at a time, just separate the names with a semi-colon, like this:
Antipitas ; Mal H ; Bud Helms ; JohnKSa
That way, whomever comes online first can take care of the problem. Yeah, that doesn't really solve the problem immediately, but it's the best we can do, sometimes.