When all that's left of you is your body, and your soul has evacuated... i.e. to perish, to die, often by ones own hand. Often cited in the videogame 'EVE Online' due to an affect that happens to your character when it dies, resulting in a corpse floating in space with the item category: 'biomass'.
Person 1: Hey, I just spent my last 2$ to my name on a lottery ticket and got nothing back... can you hook me up with a smoke?
Person 2: Bro, just Biomass.
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