Mine was fortunately in my own house. Just fully decorated the kitchen and the wife and I had been out shopping for a new clock, ended up with a heavy glass wall clock.
Anyway 9 o'clock Saturday night she decides that it's got to be fixed that night couldn't wait till Sunday :mad2:
With the weight of the clock it needed to be drilled and plugged to hold it. I knew that there was a cold water pipe buried in the wall, so I thought 6" to the right of the RSJ and move it out into the extension side of the kitchen will be fine. Should've drilled it where the wife wanted it and would have missed BOTH hot and cold pipes. Water everywhere.
Still can't work out to this day why the pipe was routed where it was, and had to redecorate whole wall again.