The dead bodies that are left over after a phish or grateful dead concert. Which then are later turned into hippie zombies after a politically conservative necromancer resurrects them. which in turn puts the hippies souls trapped in a copy mortal kombat and shall get their ass kicked and their spines ripped out for all eternity. The ideology and term "zombie code of honor" can be traced back from the popular kid rock song-bawitdaba.
Rufus: Hey after that grateful dead concert i saw that bible thumping necromancer getting ready to whip out his "zombie code of honor" on those dead bodies.
Leroy: Yeah, hey wanna go play some mortal kombat?
Rufus: fuck yeahh!