...Pow! To the moon!
At our house in LA, the water supply to the sprinkler system includes an exposed section of 1/2" copper pipe with soldered joints. It transitions somewhere along the line to PVC, but near the front porch it's copper, and it's holding household water pressure. The valve to shut it off is at the street. This exposed pipe makes a handy place for my wife to tie up the dog when she's out front doing yardwork. I've mentioned several times that this is not a good place to tie a dog, especially a strong German Shepherd. Of course, whenever I mention anything like this, I'm picking on her.
Yesterday evening I got a phone call from her, asking if we had any hose clamps. Hose clamps?
Turns out the inevitable happened, and the dog had pulled one of the pipe joints apart. The neighbor across the street (bless his heart) was trying to stop the rush of water with a piece of hose and some clamps, but didn't have any clamps of the right size. My wife asked if I thought she should call a plumber. Um....yes, you should call the plumber. Of all the times a plumber would be useful, this is one of them.
A few hours later I got another call, telling me things were fixed, to the tune of $290. She felt bad about the whole affair, and I did my best to avoid the "I told you so" routine, but once, just once, I wish she'd believe me when I tell her not to do things like this.