The quote "Toast cannot be explained by any rational means. Toast is me. I am toast." from Margaret Atwood's novel "Oryx and Crake" reflects a deep metaphorical connection between the speaker and the concept of toast. It suggests an intrinsic relationship where the speaker identifies with toast, implying a sense of simplicity, comfort, or perhaps existential significance. This identification conveys a broader theme within the novel about the complexity and absurdity of life and identity.

This expression highlights the struggles of understanding oneself and the world in a rational way. By stating that "toast cannot be explained," the speaker acknowledges the limits of logic and reason, embracing the idea that some aspects of existence are beyond analysis. This resonates with the overarching themes of Atwood's work, which often explores the nature of humanity and our place in a rapidly changing world.