A humorous alteration of the idiom "heavens to betsy." Popularized by the '60s cartoon characterSnagglepuss, who was a regular on the Yogi Bear Show. "Murgatroid" is sometimes spelled "murgatroyd" or "mergatroid."
a fat crazy bitch with an insatiable hunger for children and their bikes. A Murgatroyd will almost always carry a chain with them just in case the opportunity to steal a child. Murgatroyds are attracted to fat Italian men so beware!