going right back to ooperloopers question at the start of the thread, you could try answering the door in your underwear and with a can of lager in hand - that might put them off.

in my experience, Saturday morning is the time when JWs usually do their missionary work - so unless I am expctin someone, I dont answer the door!

(with apologies to all the recent posts - it was all getting to intellectual for me!)