person A: Something smelled really bad at work the other day. We found an old moldy rotting sandwich in a coworkers desk.
person B: Jeez_comma_ wonder why they left it there for that long?
person A: I have no idea. We found it after she left. It was really gross. I wonder if her house is that nasty?
person B: Who knows_comma_ that's a waste of a good sandwich though!