lol I was just thinking about that episode too.
Round my way we only get mormons canvassing for potential converts once in a while. It's always two polite, respectful young gentlemen dressed in smart suits, with a satchel or small rucksack slung over one shoulder.
Never have any problems when I inform them 'thank you, but I'm not really interested.'
The last two introduced themselves with a polite hand shake, informed me that they were 'brother so-and-so and brother name-escapes-me' and asked if I had time to chat about the book of mormon.
I trotted out the usual 'thanks but no thanks', to which they bid me 'have a nice day, sorry to bother you'. I told them that it was quite all right and wished them the same.
Can't say I ever got the same polite acceptance from the jehova's witnesses... those loons just won't take no for an answer! When they tell me who they are I just close the door on them now, saves a lot of hassle.
Back when I was a student, some of my house mates invited two of them in for a cuppa and a chat... After 3 hours I think they were glad to leave
I have a good mate who was brought up as a jehova... his family 'disfellowshiped' him when he turned 16 for some indiscretion that teenagers are likely to indulge. To this day (he is 35) they won't speak to him. That and some of the other things he has told me about them, give me a dimmer than average view of their particular brand of religion. He calls them a cult. I'm inclined to agree.