The most laziest form of species in the Marine Corps, consuming alchohol while packing parachutes, and taking long lunch breaks while hung over (usually lasting 3/4 of a work day)
A rigga is an oil rig. This slang is often used to refer to an oil rig by the crew of the rig, as a form of disrespect to the rig. This choice of language shows familiarity with the oil rig and a distaste for the proceedings that continue within.