I had a guy at Walmart with a ratty old rusted Dodge pickup, with a plow and a dead battery, he was yelling at me because I did not want to give him a jump star. I told him my alternator was too weak to jump his truck (lie) and I didn't have cables (another lie) I just didn't want to hassle with any potential problems. He went on and on about how I wasn't a nice person, yada yada yada. I just smiled and wished him good luck and drove away.
I guess I could have hooked to his battery and shorted the cables, blowing up his battery.....

 

They freak out when I go to the back to get to the battery.