During World War Two, American airmen over Europe used the term to describe what the Poms call flack. Fire from AntiAircraft Artillery
In modern times the term is used as a measure of credit rating.
On Auckland's North Shore it is applied to one of the Mayoral candidates
Arrogant Alcoholic Arsehole
Ratings by Absolut.
If you're not careful Whaleoil, you might win this damned thing!