Most monsters under the bed exist to be feared. Lizzy's has a twist built into the first two lines: it isn't only under the bed. "Under the bed / In my head" fuses a childhood hiding place with the mind, and the rhyme does the fusing, locking the physical space and the mental one into a single sound. By the time "Should I be dead?" closes the stanza on the same rhyme, the monster has stopped being a bedtime story. It has become a way of talking about something much heavier, a presence of despair that lives inside the speaker and has become as familiar as a companion. Since nothing is supplied here about who Lizzy is, the speaker is best read as a voice created in the poem.
The monster's behaviour changes fast. "It crawls / It creeps" is classic horror, but "It sees me / It weeps" turns the creature into something that notices and grieves. From there the poem speeds up: pity, then "witty," then "giddy." Those three feminine rhymes bounce along almost like a joke, and the sound mimics a mood swing. The giddiness isn't relief, though. "I laugh, I cry / All the while / I think I should die" puts laughter, tears and a wish to die in the same breath. The poem won't separate comfort from danger.
Its form helps explain why. The lines are short, usually two or three beats, and the rhymes arrive with nursery-rhyme regularity: "friend," "ends," "mends." That sing-song surface sits uneasily on the content. "The fun never ends" is cheerful on the page and chilling if you take it literally. The word "relationship" in "The relationship mends" is oddly grown-up for a poem of this kind, and it makes the bond sound like a friendship that keeps surviving its quarrels, perhaps one that is not healthy. Notice too the single, stranded lines: "That's when I start to get giddy" and "One I surely will miss." Each hangs off the end of a couplet like an afterthought, completing a rhyme the speaker didn't plan to finish.
The middle of the poem turns to other people, and they are mostly absent. "Some tremble in fear / They never come near" explains the loneliness: the monster's company is partly a consequence of everyone else keeping away. Then comes the only line in quotation marks, "It's better this way," delivered as "a whisper in my ear." The poem never says whose voice it is. Judging by the context it could be the monster's, or the speaker's own thought wearing the monster's mask. Either way, the comfort it offers is a kind of persuasion toward withdrawal. "I listen in bliss / A goodnight kiss" is tender on the surface, but "goodnight" can mean sleep or something more final. The lone line that follows, "One I surely will miss," suggests that this kiss is a last one.
The ending is where the poem's craft shows most. The tidy rhymes fall apart into fragments: "Through torture / And pain / Left me / In the rain." The word "torture" sits awkwardly beside "You've served me well," which makes the friend's service sound like a harm the speaker has learned to be grateful for. "Left me / In the rain" is ambiguous. The monster may have departed, leaving the speaker exposed, or the rain may be cleansing, a sign of a hard new start. The poem doesn't choose. Its last line, "Goodbye / To my friend under the bed," stretches out after the clipped lines before it and returns to the opening image, so the poem ends where it began, with the bed. The word "Goodbye" standing alone gives a pause before the address.
What makes the poem significant is its honesty about ambivalence. Many poems about darkness treat it as an enemy to be beaten. This one admits it can feel like company, even affection, and that giving it up might involve grief. Using a childhood monster to say this is clever, because the figure is simple enough for anyone to recognise yet flexible enough to carry something adult. Because the poem touches on thoughts of death, it deserves a careful discussion. It suggests that feelings of this kind can be hard to talk about, and that language, even a small rhyming poem, can be a way of looking at them.