The title refers to the The Norman conquest of England in 1066 AD by William, Duke of Normandy and his victory at the Battle of Hastings. The Norman invasion of England was significant because this was the last successful invasion of England to this very day.
Norm calls himself "Stormin' Norman," a nickname that would later be attributed to Norman Schwarzkopf after Operation DESERT STORM. The March 20, 1991 installment of the comic strip Doonesbury had Schwarzkopf receive Norm's traditional greeting of "NORM!" after walking into a bar.
First time Norman's name is mentioned in the title