From an IM conversation:
Friend: Ever had someone who will NOT leave you alone at lunch?
Me: Heh .. yes
Friend: I'm trying to eat and she just will never leave me alone. She likes to come chat with me while I'm trying to eat. She's sitting like 10' away right now while i'm typing to you. (can't see the screen obviously)
Me: Your IM client doesn't show the "old" conversation if you get a new msg from someone does it?
Friend: Nope.
Me: Then close this window and I'll message you one minute. Get her looking at the screen.
... a minute passes ....
Me: Dude have you ever had someone who will NOT fucking leave you alone while you're trying to eat?
Apparently, it worked. Friend has admitted they now owe me a favor. It's Godfather-like, I tell ya.

That's quality. Good looking out Derek ;-)
Are you Marlon Brando from the Godfather or Marlon Brando from the Isle of Dr. Moreau?