Why even call it a rush fee when the only rush is caused by their wait? Isn't it just a way to charge more because they know you're stuck? They could have done the work at the normal time but chose not to. What kind of service punishes you for needing it when they said it would be ready? It turns a basic job into a stressful shakedown.

Wait, you were just spraying carb cleaner on a 6.7 for years? That's wild, I thought everyone knew that wouldn't cut it!

Remember thinking that way after my first kitchen fire. Honestly, the mess-ups taught me more than any warning ever could. Sometimes you need to see the smoke yourself to really get it. A lesson that sticks is usually one you learn the hard way.