Martin the window cleaner....
Martin, the window cleaner: What's that you've got there?
Me: It's my new digital camera. Nice, isn't it?
Martin, the window cleaner: Let's have a look.
Me: I'll tell you what. Let me take a picture of you first and I'll show you what it looks like.
Martin, the window cleaner: Oh.
Me: Carry on with what you were doing and I'll take the shot.
Martin, the window cleaner: But what would you want a picture of me for?
Oh, did I mention that Martin is ginger. And plays football. And is coming to my party... :)