I went down to the pet shop to buy cat food, before I am lynched by two hungry felines.
As I got out of my car in the parking lot, a scruffy green car came to a rapid stop, and a young guy leapt out, brandishing a bunch of flowers. He said, "These are for you. I would like you to have them. Have a nice day!" and as I was thanking him for being so kind, he got back into his car and drove off.
How totally random, and how nice!
Made my day :-)