Turning the wrong way. I once spent ten minutes turning a valve left to “tighten” it, and nothing happened. Righty-tighty, lefty-loosey. It’s not just for screws, buddy.
Forgetting to open a faucet before you turn the water back on. Do this, and you might get a surprise spray like a clown car on caffeine. Always run a tap first to let air escape.
Panicking and calling a plumber for a valve that just needed a little elbow grease. You’re tougher than that. You’re basically a plumbing superhero now.
