"I used Google Voice to make my friends and family believe we were being spammed by a fake dating site for people who love llamas. It was called ‘Llama Llovers.’ I sent text updates for blog posts, singles mixers, and even a special musical event!
Any time they were given a prompt to ‘cancel their services’ I would thank them for upgrading services instead and send texts more frequently."
If it is really old and rusted pipes it can happen randomly, but typicaly after peaking pressure that will rattle the dirt in the pipes loose. Reconstruction where the pipes are knocked can also do this.
I don't think mom actually immediately thought of the exact cause, people...
She just thought something was obviously wrong which was the whole point. Best to move on, future plumbers.