The word titanic is applied to someone who goes overboard. The higgins is added when a person goes so far overboard that it is hilarious.
titanic: Joe purchased 5 kegs of beer for his Y2K party
titanic higgins: To prepare for Y2K Titanic Higgins purchased 500 pounds of oatmeal, 500 pounds of wheat, a deisel powered generator, 500 gallons of fuel, 1000 rounds of 22 ammo and buried $1000 worth of change in the yard. He spent new years eve in his bunker in the basement.