Buttsn runs a repair shop nearby and always has something interesting going on. Today was no exception. “C’mon out back,” he smiled. “I have a little project I want to show you.”

The squeal itself is caused by a pad that’s vibrating back and forth very rapidly. To human ears, this vibration’s frequency sounds like a squeal.

You wouldn’t go into a strange town and drive around aimlessly until you found the right street. You’d stop at a service station and buy yourself a road map.