The lyrics describe the narrator's experience of rain pouring into their head and changing them in strange ways, causing them to walk carefully and feel like they might overflow with rain. They hear the sound of rain constantly as they lie in bed.

Meaning of "Rain" by Shel Silverstein

The lyrics of "Rain" by Shel Silverstein can be interpreted as a metaphor for the impact of external influences on an individual's psyche. The rain pouring into the narrator's head represents how external circumstances or events can enter our minds and change us in unexpected ways. The feeling of being filled with rain suggests a sense of being overwhelmed or influenced by outside forces, leading to a loss of control and a need for caution in navigating one's life. The constant sound of rain symbolizes the persistent nature of these influences, highlighting how they can permeate every aspect of our being and alter our perception of the world around us.

The lyrics may also speak to the idea of trauma or emotional turmoil, with the rain representing a metaphorical storm that has left a lasting impact on the narrator. The need to walk carefully and the fear of overflowing could be seen as a reflection of the struggle to cope with the aftermath of such experiences. Ultimately, "Rain" conveys a sense of vulnerability and fragility in the face of external forces that can shape our thoughts and behaviors in profound ways.