I got a phone call from one of my best friends, known him since kindergarden. He started out the conversation with "I will pay you for coming over". He had dim lights through the entire house. I drove over and pulled the panel apart and only had 25v or so per phase. I went outside and checked the line voltage and had the same. I told him it was the power company he needed to call, he just said thanks I will catch you later. I guess he felt that if I didnt need to do the fixing I didnt need to get paid. My friendship with him is more important than any service fee and I would have said no to any money, but its the point of the offer. He told me a month later he wanted some outside receps installed for christmas lighting, I said "sorry, I only do work for people who pay me for it". He didnt see the humor in it but I got a good laugh anyway! I still have not done the work for him, he is just to cheap/"dense" but a great friend.
Then theres the other buddy who needed new breakers installed in his house, I went over, did the work, on the way out he grabs me and writes me a check when I was not going to charge him a thing, he said that if I ever expected to do any work in his house that I would need to charge him full rate or I would not get the work! A true friend for sure, best man at my wedding.