I had the beautiful marks from a chain that snapped all across my bumper, tailgate, truck box, and roof. It also scratched the rear window. This was my second brand new truck in 1999. It was 3 months old. I was removing tree stumps from my yard in 4wd low with an overweight right foot and 15' of slack in a 30' 3/8" chain.
Do you remember the saying that you could learn a lot from a dummy? Guess how much I learned that day?
That's one of those hard learned lessons, the kind that stick with you forever.