At any rate it explains a lot. I noticed that you've continually gotten less merry over the last months and wondered what might be the cause. I hope you'll heal in record time and that the dentist will be able to fix the nerve.
Three times luck is better than just one (sorry that they are a bit nibbled at - slugs want luck, too)
(note to Mods: linked to Twitter but it's my own account and my own pic)
The employer is ok it's just that the 2 guys responsible for fire drills happen to be in the local fire brigade and tend to exaggerate rather a lot. After I sarcastically inquired (within hearing range of the boss) whether they were planning to apply for the special effects Oscar they've calmed down considerably, much to everyone's relief. I suspect the boss agreed with me and had a little chat with them.
Since wastewater management is part of my job I can confirm your theory. However, even the deysnchronised volume would still be rather a challenge at least for the first basin in the local wastewater treatment facility.
Also, there's frequently a considerable pressure drop in the drinking water pipes (required for the flushing) at 8:15 pm in Germany, when everyone flushes the toilet in the ad-break after the news/before the movie starts. I presume there are similar effects in other countries, depending on their TV schedules (baseball finals for example seem a good candidate to me).