A few years back we sold a big TT at a CG on a lake in our state. We had it FSBO for a season. We were not desperate to sell, just open to it should a buyer come along.
After a holiday weekend when the CG was packed an older couple strolled the CG and saw our unit and wanted to buy it. They did, and did not know anything about campers/trailers/etc.
After they bought it I spent an afternoon with them going over everything I could think of and left.
2 weeks later, out of the blue, they call and immediately stated "Hey, there is a problem with YOUR trailer so sold us." To say the least I was not happy. I quickly straightened them out and informed them that I no longer own a trailer, they do.
Long story short, they appologized and admitted it was worded improperly. They had lost power (on the weekend, no dealers open)and wanted to know if I had any ideas. Troubleshot it over the phone and got them fixed up.
It worked out fine in the end, and they never called back, but it immediately put me on the defense and uncomfortable.