The poem uses vivid imagery to paint a picture of a child's descent into darkness. The speaker is alone in a dark room, and their imagination runs wild, conjuring up frightening images of monsters and shadows.
The poem suggests that our fears are often amplified in the absence of light and understanding, and that the mind can create its own monsters.
However, the poem also hints at a sense of playfulness and adventure. The speaker is initially terrified, but ultimately finds a sense of excitement in the dark, finding it "fun" and "interesting". This suggests that even in the face of our fears, there is always something new and exciting to discover.
Overall, "It's Dark in Here" is a reminder that fear can be a powerful emotion, but it is ultimately up to us to control our imaginations and find the courage to face the unknown.