While using our tools, working on our cars, transporting our cars, taking them for a test drive, horsing around with our rides, or just taking a drive, many of us have or will experience a few (or many) acts that when we did them seemed innocent or didn't at the time seem to be dangerous - until we did it. Sometimes the end result teaches a good lesson or that "personal tip to self", while other results can lead to damages, personal injury, or worse. With a lot of enthusiasts always entering the hobby or looking to do their own work on their car, there are pitfalls that can happen if you are not aware they can happen. I don't call it being stupid, because if it were we would not have done it in the first place knowing the end result. If you were not aware of the danger, then you just didn't know -not everything comes in a book. And even when you have "done this before" and it turned out OK, it doesn't always mean the next time you can count on the same outcome -you might have just been lucky all those other times. So share your car related stories of those lessons learned and tips related to "don't do this, it may injure you, damage your car, hurt some one else, or even kill you" so that others might be spared, or at least think before they act.