A more thorough explanation:

Definition: Voluntarius daemon (vol-uhn-tair-ee-uhs dee-muhn), n. [Law Latin “voluntary madman”] Hist. A drunkard; one who has voluntarily contracted madness by intoxication.

Example: John was arrested for causing a disturbance in the street while he was drunk. He was referred to as a voluntarius daemon by the police.

Explanation: The example illustrates how the term voluntarius daemon was used to describe someone who had voluntarily become mad due to intoxication. In this case, John's behavior while drunk was seen as irrational and out of control, leading to his arrest. The term voluntarius daemon was used to describe his state of mind at the time of the incident.