The opposite is even more bothersome: someone rings your doorbell, you ignore it because you don't want to interact with the person, and then he just stands in your driveway for like five minutes.
Another variant: you are returning from an errand and already have your blinker on to turn into your driveway when you see door-to-door salespeople walking up to your door, so you have to cancel your signal in a hurry and circle the block until they leave.
Though entirely plausible, this also seems like something from a Seinfeld episode.
It happened to me--for real--about a year ago. The door-to-door folk numbered three and since I didn't speak to them, I'm not completely sure they were selling goods or services: they might have been missionaries or soliciting charitable donations. (It was the wrong season for them to be going door-to-door on behalf of a candidate for elected office.) My reasoning was that letting them wait outside an empty house was better than any of several unpalatable options that crossed my mind (each beginning with me pulling into the garage):
* Cut the engine immediately, close the garage door with the remote in the car, and enter through the back door, snubbing the three people.
* Get out of my car, head for the front door, and go through the whole "Can you write it down? I can't hear" routine when I know up front I'm not going to buy anything they are selling.
* Get out of my car, and let myself into the house through the front door, pretending they're not there.
Edited to add: A while ago the
New Yorker had an article on
door-to-door selling as currently practiced. It notes that, compared to other sales methods, door-to-door works especially well for products prospective buyers would like to have, or think they need to have, but whose quality dimensions are so complex it takes an offputting amount of research and optimization to be sure of getting a good deal. Solar power is currently big in the US right now. In the UK, where most of the housing stock has single-pane windows, "double-glazing salesmen" has become slang for shysters trying to lock customers into disadvantageous deals.