I'm swapping email with a friend of mine and she said something along the lines of "don't you just hate computers? They're supposed to be smarter than we are."
I replied that they are only smarter when I program them to be smarter. I clicked on "send" and my client promptly sent her ten copies of that email. I should have known I was offending the computer gods.
Update: Naturally, I forgot the most interesting part of the email swap. In the above email, I was also asking her out on a date. Sending it ten times made me look pretty desperate