Many years ago I lived in a house where people coming to the front door walked past the living room window to get to the porch. It was about 08:30 saturday morning and I was sitting on my couch drinking coffee when 3 of 'em came to the door. We clearly saw each other as they came to the porch. They knocked, and without getting up I screamed "WHAT THE HELL DO YOU WANT?" I guess the mood of my message was clear enough as they quietly left. I thought, " that went well".