Nothing dramatic happens in this poem, and that is exactly why it stings. A boy smiles across a table. A boy kicks a chair in class. From these small, almost forgettable moments, Jessea L. Vaughan builds a portrait of what it is like to be treated as less than a whole person. The speaker is blind, and the people around them have jumped from that single fact to a much bigger and much falser conclusion. The central idea sits in the refrain: "I may be blind / But I am not dumb." Blindness describes how the speaker perceives the world. It says nothing about how well they think.
The imagery turns the speaker into an object. A "decoy" is a fake bird, a prop placed on the water to look like the real thing. When the speaker imagines the boy treating them as "just a decoy / Across the table from him," we feel the insult of being present but not counted. He talks "about me / While I'm sitting right here," as if the speaker were furniture. Then comes the "foreign / Substance he's never seen / Before." A substance is something you examine, not someone you speak to. His stare is not curiosity between two people but a study of a specimen. The smile "on his face" at the start makes this worse, because it suggests he has no idea he is being rude. Politeness on the surface covers the lack of respect underneath.
The refrain is the poem's backbone, but it does not simply repeat. Each time it is introduced differently. First comes a tentative excuse: "Or maybe, / He's just forgotten." Then sarcasm: "Apparently no one told him." Finally a demand: "Someone needs to tell him." The speaker begins by giving the boy the benefit of the doubt and ends by running out of patience. The anger builds without the voice ever rising. The speaker's most cutting weapon is dry understatement, as when the boy "must not have gotten / The memo." That office-sounding phrase is perfectly flat, and the flatness is where the mockery lives.
The form supports this controlled tone. There is no rhyme and no regular meter. The lines are short and conversational, and the words are plain and mostly one syllable, so the poem sounds like someone speaking with deliberate calm. Rhyme is replaced by repetition, and the refrain works like a chorus that the speaker has had to sing too many times. Line breaks are used for emphasis. "Before" sits alone on its own line, a small pause that makes the boy's staring feel longer. "Or maybe," also gets a line to itself, a beat in which the speaker seems to weigh whether to be generous. The refrain's grammar matters too. "May... but" concedes the fact and then refuses the assumption built on it.
The word "dumb" does a lot of work. It means "unintelligent" here, but it also carries an older sense of "unable to speak," and the poem is quietly ironic about both. The speaker is plainly not silent; the whole poem is their voice. Judging by the phrasing, the boy has lumped one disability together with others, as if one difference must come bundled with several. The poem also plays on seeing. The speaker is the one called blind, yet the boy fails to see what is obvious: that the person across from him can hear, think, and feel uncomfortable.
The speaker's posture is worth noticing as well. In both scenes they are "sitting," still and stuck in place, while the boy stares, talks and kicks. Yet the speaker is the one who acts through language, asking him to stop and finally naming the truth outright. The poem does not ask for pity. It asks for something harder and more ordinary: that people stop talking over someone, stop staring, and stop kicking the chair, and that they treat the person in front of them as a person.