Er, is this normal practice?!
I was laid on the living room floor with DS, the TV was on and my car on the drive, all visible to anyone coming up the path. I heard the door go, assumed it was mam and called out a greeting, only to be met with silence and the door closing again and the postman's back retreating down the path.
Now I appreciate it's raining but isn't it normal practice to KNOCK with anything that won't fit through the letterbox, not let yourself into someone's house?!