Bad: your train into town is covered with litter, including someone’s mouldy discarded sandwich on the seat opposite me.
Worse: A dishevelled tramp-like figure gets on and sits opposite me. He picks up the aforementioned sandwich and examines it thoroughly, before stowing it next to him as if he’s saving it for later.
Worser: Said tramp picks a filthy napkin off the floor and uses it to wipe his hands and face.
Did I mention I’m spending an entire week on trains, starting tomorrow?