Now that I really think about it, I think maybe the song is about the feeling of regret and remorse a person feels after abandoning there children and using the rikki tiki tavi story to describe it, saying that he's a snake and that he let his children go. In the story, the snake Nagaina, leaves her eggs in her nest to go and kill a family, while rikki goes into the nest and destroys them. The line "Our lives are swamps" continues with the whole snake metaphor, seeing that snakes live in swamps. The swamps symbolize how the persons life is who abandoned there child, very dark and depressing, and they want to "just get rid of it all". Also, the "shroud prison" could also be describing describing the persons living conditions, seeing that shroud means to conceal something, the home could be the persons own personal prison, concealing there "Big secret". But yeah, just a rough interpretation, I could be completely wrong.
Now that I really think about it, I think maybe the song is about the feeling of regret and remorse a person feels after abandoning there children and using the rikki tiki tavi story to describe it, saying that he's a snake and that he let his children go. In the story, the snake Nagaina, leaves her eggs in her nest to go and kill a family, while rikki goes into the nest and destroys them. The line "Our lives are swamps" continues with the whole snake metaphor, seeing that snakes live in swamps. The swamps symbolize how the persons life is who abandoned there child, very dark and depressing, and they want to "just get rid of it all". Also, the "shroud prison" could also be describing describing the persons living conditions, seeing that shroud means to conceal something, the home could be the persons own personal prison, concealing there "Big secret". But yeah, just a rough interpretation, I could be completely wrong.