Manny can't remember anything about his life, or indeed about life in general, but he's not without his uses: Per the title, this talking corpse becomes an undead tool kit — his erratic erection functioning like a compass, his mouth and lungs a projectile device, his stiff limbs handily spring - loaded
through rigor mortis.
This happens first in muscle, leading to muscle hypercontraction and
rigor mortis, and then spreads to the intestine, where it triggers a wave of blue death fluorescence that renders visible the passage of death
through the organism.