A previous inmate came to take a tour of the jail, and told us a story about a rule at the time for the prisoners. Apparently the inmates were not allowed to whistle. However when they hung people, the guard would walk up and down the hallway whistling the same tune over and over.
We often hear whistling coming from the jail hallways. One day last week two people heard the sound of whistling from their offices and both went into the jail to investigate. There was no one else around.