My dad used to open up photo albums and stuff and you'd have to tell a story about the picture but you couldn't tell the truth so you had to make up a story about whatever you were looking at. He really taught us how to lie.
Many messages are just thanking a stranger for a kindness. . . I love those ones, because I imagine everyone else reading them feels encouraged by such examples of humanity and generosity and tenderness. And if they encourage us to reach out to strangers more often, that's a good thing.