Found posted in a humor newsgroup (rec.humor.funny)
I've been getting virus emails from inside the company. The "From:" information has obviously been spoofed. No big deal, pick one that just arrived, read the email headers, see whose machine it is, check the company directory, pull out the cell phone...
"Hi, did you just open an email that you shouldn't have?"
"Oh, um, uh, sorry, yes, I knew that one might be a virus... Um, what do
I do?"
"Unplug your machine from the network, and take it to I.T."
"Thanks! Who is this?"
(inspiration strikes)
"I'm from the Internet. Be more careful next time."