Here's a true story from an anonymous source:

<Not David Berman> Hello, this is Fred, how can I help you?
<User> Hi Fred, I'm trying to get my CDs to play in my computer, but they're not playing.
<Not David Berman> You have your CD in the drive and speakers connected to the computer?
<User> Yes, and I have the program up to play the CDs.
<Not David Berman> Do you see a little triangle that points to the right?
<User> Yes.
<Not David Berman> Did you click it?
<User> Yes, and it seems to be doing something.
<Not David Berman> I assume you're not hearing anything at this point?
<User> Nope, and I have my headphones connected.
<Not David Berman> Headphones? Oh. Well if you have headphones and you're talking to me, you must not have put them on. Do you hear anything when you put them on?
<User> Hold on...
<Not David Berman> *insert laughter here*
<User> Yep, I hear it now, thanks!
<Not David Berman> *insert more laughter here*

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This is another true story not brought to you by David Berman

At the office we have a very strict policy about printing on the color printer.

Well, I happened to be walking into the copy room where the color printer was and I saw this woman putting orange paper into the color printer. She was printing black and white flyers on this colored paper using the color printer.

After I stopped laughing, I spent a few minutes explaining to her that you can print black and white on colored paper using a black and white printer.

As luck may have it, this was the same person that didn't realize you need to put on headphones to hear music.