This song, another Timmy and Bobby song, uses Agent Orange as a metaphor for the destruction of Earth. It deals with the idea that all of existence came into being at once.
In other words, everything that happened, is happening, and will happen is already there. Like a record, all the music is there, embedded in the wax; the needle going across it is the way we experience it, just as moving through time allows us to experience all this pre-destined shit.
Some of this pre-destined shit is the suffering of all the beings on Earth and, indeed, the destruction of the Earth (as mentioned above).