This is the one bad thing about working nights and sleeping days. People see my truck in the driveway, so they decide to ring my bell. Most of the time I don't even know what they're there for, as by the time I've gotten up, put on some pants or my bathrobe, and get to the door, they've gone to the next house.
I remember staying in a hotel once where I made a sign that said, "Do Not Disturb, We're Already Disturbed Enough" (or something like that). After two days, the concierge (sorry, French word, don't know if I spelled that right, and I really don't care, to tell the truth) knocked on the door, wondering if someone else had put the sign on the door as a joke.