let's try to leave out loss of limb, bodily harm etc. humuliation is ok. I "stole" a HUMVEE when the battery died in our truck. Thought i was going to jump start thre truck and get back to the business of fixi'n aerospace vehicles. Wrong. a guy running at me frantically screaming something about 28 volts. Yup, if you don't already know those contraptions are 28VDC (or at least this one was) It's rare but i was a bit embarrased. good thing i didn't make the connection!