in my early teens i was very gung ho going door knocking--on my own ! one dark tuesday evening i was out knocking--before the tuesday group meeting. this was in Handsworth, Birmingham UK. ( you wouldnt go out at night there these days ).
anyway--i knock door--it opens--and i--a young teenage kid--was confronted by a poor chap who had no nose--just a hole in his face. i think i needed fresh underwear.
a few years later--same area--saturday morning--door opens and a guy is holding a frying pan full of blackened frazzled bacon and sausages--smoke pouring out. he slammed the door in my face. why he answered i the door never knew.