Sometimes, if I happen to be walking somewhere, I’ll walk next to someone just to see how they handle the awkwardness. I find that most people are so uncomfortable with it that they will actually slow down. Sometimes I’ll also match their pace, and they end up slowing down so much that it becomes very obvious, and I can tell that they start to wonder if I’m doing it on purpose.
This morning, I was walking next to a woman seemed so distressed by it, that after a while, she feigned running for a bus that she had absolutely no chance of catching.

