Synonymous with "whole hog". Taking a given endeavor to the maximum extent with wanton disregard for any collateral damage. The focus is on maximizing the end result. In other words, the ends are more important than the means of achieving that end result.
The term was first coined by Pat Buchanan to describe Hillary Clinton's campaign.
Kyle: "What's your strategy tonight at the bar?"
Daniel: "I plan on aggressively playing all my cards."
Tom: "So you want to go 'whole hog'?"
Daniel: "Indeed, porkus maximus!"