Maricopa County Sheriff's Office controversies. The Maricopa County Sheriff's Office (MCSO) is a law enforcement agency in Maricopa County, Arizona that has been involved in many controversies since 1995.
It was then used to mean 'a sudden state of activity (or inactivity) or state of mind', as in this early example, taken from William Warner's Albion's England, 1586: His seruants fear his solemn fittes.. The phrase 'fits and starts' is somewhat tautological, as both allude to sporadic activity.
From the Phrase finder:: This saying is said to come from the American West, where the signal for a fight was often just the drop of a hat.