People read books. People stare out windows. People listen intently to what is said in the seat behind them in case someone might actually speak to them. People glance around, hoping that someone will take that as a cue to let them join in.
Have you ever been in a situation like that? With all the chatter everywhere but you weren't a part of it? Or were you part of a group when you spied someone looking totally out of place? What did you do?
What would Jesus do?