This just happened to me about an hour ago:
I've been taking care of a lot of details (you know, emails, reading jwd...) and I was not even showered yet for the day. About 12:25, a knock comes to my front door. I ignored it. The knocker (probably a deliveryman) can assume I'm gone, I reason. A minute later, another knock, and it sounds like a voice, too. Oh great... missionaries! Well, tough luck!!
My dog, meanwhile, is going ballistic barking!
Another knock! What the heck is wrong with this person???!!?? Go AWAY!! I shout inside at him/her.
Two minutes later, another knock! I give up!! I'm ticked!!
So I peer round to see if there's anyone still on my doorstep. There is!! Looks like a kid, perhaps looking for jobs for spare change? Boy, he's persistent. I hate that I'm going to have to tell him off while wearing a bathrobe.
I open the door and say sternly, "Hello?!"
The young Asian man replies....
"Hi! I'm your new exchange student for the school year!"
AAAAAAAAAAAAAACK! POOR GUY!
Turns out he's a really great kid. He was panicking there, though. Some miscommunication has apparently happened; he left messages about his arrival for me on someone else's phone (wrong number). The school had sent all his info, but to my hotmail account which is set on 'exclusive', and so the email was put into the trashbin automatically...
Still laughing,
bebu