When a person encounters a problem on a computer, calls for help, and finds out it's their fault. Also called a code 18.
Person 1: My CD drive won't open! :'(
Person 2: You're computer's off.
Person 1: Why does that matter?
Person 2: Wow, operator error!
Prices shown in USD.
邮件由 firstname.lastname@example.org 发出。我们决不会发送垃圾邮件。