What Is the Most Horrible Technology Sound?

Technology is amazing, until it starts generating noises that make you want to lock yourself inside a Faraday cage time machine and zip back to the Stone Age. Dot matrix printers. A phone buzzing on your upstairs neighbor's floor. The default Android alarm. That stupid marimba ringtone. What is the most horrible sound… » 3/11/15 5:41pm 3/11/15 5:41pm