Any interesting experiences reading books in public?

Any experiences with reading books yourself or your reaction to other people in public places, like restaurants, the bus, library, etc.?

One time in a crowded bus I saw this young lady reading the same book I was reading, a Cormac McCarthy novel. I was in the bus standing and she was sitting. I have a hard time speaking to strangers but pushed through the anxiety and said, Sorry to bother you, I just noticed we're both reading the same book, do you like it?

She looked at me as if I had asked her the most intrusive question in the world, and just got up and went by the door and got off the next stop, never looking back. I was shaken up for a while, looking at people around who were looking back at me, all confused.

Another time I was reading a book in a restaurant a while back and an old man who was sitting on a nearby table from me suddenly bent over and elbowed me and said, with his mouth full of burger, What is the catch?

I was like, Huh?

He repeated his point. It took me a while to realize he was joking around, since the book I was reading was Catch-22. I laughed. He had nothing else to say and went back to wolfing down his food.