One of the undead or the walking dead, an animated soulless corpse controlled by a voodoo deity. This state of being can come about due to prolonged exposure to kibitzing hoydens, hypocritical robots, and excessive sweating from time spent in the heat. Often a result of a strenuous marching band routine.
Dude, Brian has become such a zombie from all that marching band practice, just listen to him!
(Monotone voice and expressionless face)
"Float 16 hold 4 sir."