Last time I had some religious group knock on my door, I was asleep. I'm not happy about being woken up, ever. I've thrown an unopened can of soda at someone for that once. Well, my brilliant arrogance decided to just swing the door open wearing only my boxers. I did NOT expect it to be two women. Well, their oddly polite and red cheeked smiles didn't work when all I could mutter were the words "No, I have my own religion, leave". Also helped that my hair, which is fairly long, made me look like a mad man. Haven't seen any since...
Who needs a gun when you can answer naked and scare people off?