Ha! It's fascinating what you can hear without going out of your way...
Recently we had a local company make a reservation for one of its contractors - a young guy about 21 y.o. When he showed up, he seemed like a nice enough fellow. Later, when DW went upstairs to do laundry, she heard his side of a cell phone conversation, riddled with the "F" bomb, saying how terrible the accommodations were: "they have me at a f***ng bed and breakfast!" (uh, yes); "gee, this place must be f***ng a hundred years old!" (actually it's 120); "there are f***ing antiques - all over the place!" and "it's so f***ing quiet here that I'm afraid to go out at night!"
It went on and on for at least 20 minutes.
The next morning at breakfast, he said "what a nice place you have here, folks" and left without incident. Whew... I guess I'm glad he didn't tell me how he REALLY felt!.