So maybe a decade ago I pulled in to a gas station on one of my long drives along I-95. I was on a schedule and a young many asked me for a jump. He had cables. I told him I really didn't have time (was sort of true) and continued to pump my gas.
He convinced an elderly gentleman in a big, black, new Mercedes - E-class I presume. Battery in the trunk. So the kid is waving this guy to keep backing up - his cables were very short. Back, back back- STOP. Too late - black bumper cover hits the old truck he is trying to boost. Big scrape on the bumper cover -not structural but ugly. Kid immediately tries to rub it off with his hand.
Anyway I felt bad for not doing the jump since the elderly gentleman caused himself an issue. No good deed goes unpunished. I since have purchased a jump pack for this purpose.