I was on a paddling trip once, and a girl in our group couldn't get her car started after we took out. I wasn't directly involved cause she was primarily with a different sub group than I was in. I can't remember the exact symptoms, but 'jump starting' was agreed to be the next step. I didn't think that was the issue, but usually doesn't hurt. They're hooking up cables, and one guy in the group says to cross wire it; red-black. Someone else balked, I'm thinking "Umm...", and he pulls out his dick, and says 'I'm an electrical engineer, and I know what I'm talking about!'. Car never started. I occasionally wonder how much it cost to get it driving again :^D