I once had a guy who at first thought I was his sister. He realized I wasn't his sister, but I looked so much like her, he couldn't go through. He paid my donation and left. I don't know, I thought it would have been fun, but not everyone is into that lol.
I also had a former co-worker arrive. He was someone I didn't like as he wore excessive cologne at work. I wasn't sure if he recognized me, but he made up an excuse that he thought I took credit cards. Excused himself to get some cash. I thought I'd never see him again, but 2 minutes later he was back. He actually thought I'd go through with the encounter. I just didn't answer the door, as I really had no interest in seeing him. Yes, he was still stinky from his cologne.