Had an incident the day before yesterday that I think fits in here- my water heater ruptured unexpectedly. (Do they ever rupture EXPECTEDLY?) So, being it was, of course, 20 minutes before the supply houses closed, all I could do was make phone calls. Next day, I picked up the water heater, two valves, and 2 adapters to connect it with. Thankfully, when I stopped running my plumbing business, I never closed the business officially, nor my contractor accounts- it still cost me $350, even with my discounts. Prep fail, of a sort: I had the money, but it wiped me out for the week. I need to make an account for these things to fix that.
The "fun" part was, the water heater was installed originally with NO valves, so I had to shut down the entire house- no toilet flushing, no showers. Prep fail: lack of wash and flush water on hand. The 'fix', was to utilize the local water source I found shortly after moving in. A five gallon bucket took a while to fill, but we were able to flush with the bucket water, kept in the shower for convenience. I have a 30 gallon drum on hand, just never got around to filling it- guess what got filled up right away. I don't trust the container for potable water- it held something corrosive, but it will be fine for flushing use.
The good part was, I could still have coffee, thanks to the 2 liter bottles I had set aside.
My first two warning shots are aimed center of mass. If that don't warn them I fire warning shots at their head until they are warned enough that I am no longer in fear for my life.