The poem is a tiny, strange scene: the speaker sees a hand reaching out from under the wall of a public toilet stall, held out toward them. The hand then seems to speak, asking whether it has been changed by coming through such a place. The setting is crude and awkward, the sort of moment most people would want to hurry past.
What makes it unsettling is the question. A hand cut off from a body, reduced to one part pushed into view, wonders if it has become something different. The poem seems to hint at anonymity and the way a person can shrink to a single gesture, whether of need, invitation, or loneliness. We can't be sure which, and the poem doesn't say.
The speaker's feeling is mostly surprise, perhaps unease. The word "strange" sets that tone straight away. The mood is eerie, a little darkly comic, and oddly vulnerable, as if the hand's question is really about shame and identity.