A particularly noisy and destructive type of talking primate
, having long since forgotten its place in the scheme of things, which is currently set about the task of permanently altering the biosphere of Earth
in order to render it incapable of supporting life.
This talking primate alone suffers from a debilitating kind of self-reinforcing gullibility and delusion that results in an almost immovable self-importance and dualism. This condition causes humans to over-populate, over-consume and render their own environment uninhabitable.
It is theorised that humans, so afflicted, are attempting to self-soothe their collective unhappiness by committing mass suicide. Two such attempts are recorded in their recent history. Success in this effort would secure the place of humans in the category of "evolutionary cul-de-sac."
A small minority of humans exist in varying states of liberation from this delusional state. However, said minority is generally ignored by the larger civilization
If you're annoyed by this definition, it's because you're a human.