Embarrassing reading materials
I often see CTA passengers blithely reading books or magazines that I would consider embarrassing and wonder why.
Why, for instance, would you advertise to the whole world that you're a loser by merrily clutching the book "Why Your Life Sucks"? Note in this case I say that the man in his early 40s is clutching, not reading. Perhaps if he were reading it he could understand better and do something about it. But hey, admitting your problem is the first step, right?
A few years back I also saw a 20-something guy furtively reading Penthouse magazine in the single seat at the rear of the train car by the door. Too creepy.