Faxes Don't Work If You Fold Them

Overheard at the office:

First Person: "Do you know anything about this fax machine?"

Second Person: "A little. What's wrong?"

First Person: "Well, I sent a fax, and the recipient called back to say all she received was a cover sheet and a blank page. I tried it again, and the same thing happened."

Second Person: "How did you load the sheet?"

First Person: "It's a pretty sensitive memo, and I didn't want anyone else to read it by accident, so I folded it in half."