You realize the guy bitching about the coughing was responding to an asthmatic bus-rider on another line, of course. These shabby strange people are not crazy, they're out of phase. All of the ones talking to themselves are half of a conversation or argument whose other half is across town somewhere or on the next block. Oh yeah.

The guy talking about snipers? Failed witness protection program member. Sure. Why not?

The world is one big avante garde film, you just have to figure out the plotline(s). I'd like to have a quiet word with the director in a dark alley somewhere, but... hey, I'll bet there's a line for that, huh?

I totally commiserate with your bus trauma, but still enjoy hearing of the wackiness that ensues.

EDIT: Guy with the milk? Baby alien parasite. ;p