I watched the movie Serendipity with one of my friends for the first time about 2 years ago. It is pretty much a romantic movie and the girl does not want to give the boy she meets her number because she believes in faith and wants it to happen more naturally. She writes her name on a dollar and then buys something with it and says that if the dollar ever comes back to him then it is meant to be. Obviously in the real life he would most likely never find that dollar, but it was a cute and creative idea for the plot of the movie. My friend wrote her name and number on this five dollar bill just because it seemed fun and was inspired after watching the movie. The other day I was cleaning out my car and had some cash I needed to organise and found it! I was so excited because it had been a good amount of time and I totally forgot that she did that. It would have been so crazy if I found this like 20 years later and we are still friends.