[Bungleau]

One of the things my first car taught me is that a wet engine can lead to the starter current arcing across the coil, which makes the car not start. WD-40 is great for spraying on the coil, thereby reducing the wetness through some magic and allowing the car to start.

I had the chance to apply this knowledge later on with my wife's car. It wouldn't start, and I could see the spark arcing across the coil. Had her stop trying to start and sprayed the WD-40. Tried again, and there was a little bit of spark left. So I sprayed some more WD-40 on to dry up the remaining wetness.

Without telling my wife to stop trying the engine!!!

The math is simple: Spark + WD-40 = blowtorch, or in my case, fireball under the hood.

Fortunately, no one was hurt, including the car. But that's been one of my less brilliant moments.