Let's let Mr. Hankey explain it to us through song...
Everything that lives on earth poos in some way
And thats how the cycle happens each and everyday
Just look at the green green grass and the birds up in the sky
Its all here because of poo and now ill tell you why
Grass is eaten by the cattle
Which is eaten by women and men
It fuses with their bodies, and becomes poo again
And that poo goes through the sewer
which is sucked into the sea
and its eaten by the plankton which becomes the fishes me
We got bigger fish with the poo still inside
Swims up near the shore and gets eaten alive
By a grizzly bear that poos on a dead piece of sand
So that it can spring to the life and become poo for the land!
Its the poo of the antelope, the poo of the giraffe
Which crawls up to the earth, and becomes the blades of grass
The grass is eaten by the cattle, which comes out the other end
To make poo for the humans, and start all over again.