I was remodeling our laundry room one weekend, and sweat-soldering a bunch of copper pipe connections. When I went to turn the water back on, the valve broke in my hands.
Fortunately, the water company came out at 9PM on Sunday, but we didn’t have any water for another day, because I had to go to work on Monday, so the valve replacement didn’t happen until Monday evening. No pressure, in more ways than one!