Well i open the door and envite them in, after some small talk bout what there at my door for, when there inside i knock them unconscious usally with a blow to the back of the head. Then i bound there feet and hands. Then i take em down into the ole sellar an chop off all of there phalanges, of course i bandage up there wounds so they dont bleed out or get an infection. Then i grind down there phalanges into a sauce like consistency and give it to them as there only food source. I do let them wash it down with some good ole Cherry Dr.Pepper( My fav).
I don't usually get people at the door. Most of the time, it's the neighbor asking us to get his mail while he goes camping.
But...
Those Christian missionaries come every spring asking us to convert and join their church. Haha, a couple years ago, one of my family members (I can't remember which one right now) opened the door, and then slammed it shut in their faces! I ROTFL'ed so hard I almost died.
As for what I would do, I'd probably just ignore them.
Eh, if I'm at home by myself, I just look out the window and if the person isn't wielding a weapon.. () I answer it, if there's other people in the house, I just let them get it.
If I'm home alone I answer the door and block the entrance from them cuz I'm big. And if they have weapons I'm screwed. But if im not home alone someone else gets it.
For the first I see, who is near door with a little window in door. If it stranger I taking my knife and open the door and asking a stranger. If it a real good man like postman I throwing knife out and start speaking with him. If a "ostman" haven't a documents I cutting his hands and closing door.
I usually dont hear it because I have no doorbell. If I do here it I will answer it. If their trying to sell me something I'll say no I have one of those and close my door =p