Nobody in this poem is shouted at, shut out or insulted. The speaker's complaint is smaller and, in a way, harder to answer: the person being addressed simply doesn't notice how they are making someone feel. Everything hangs on one slippery word, "extra," which the speaker takes from everyday speech and bends until it hurts.
The situation is a triangle, and the first two lines build it. "Your presence makes me feel extra" is followed by "Her presence with you makes me feel extra." The second line is the same sentence with a new person squeezed in, and it comes out longer and more crowded, just as the speaker's own place has been crowded out. Then comes a correction: "But not extra like the sparks can be." The speaker knows the word has a flattering meaning, heightened and charged and more alive, and refuses it. What remains is the other meaning: surplus, left over, one too many. The poem plays on the gap between those two senses.
The three similes that follow are the heart of it, and they shrink the speaker step by step. Mosquitoes "around my head at night" are a nuisance, buzzing and unwanted, but at least a mosquito gets noticed and swatted. "A dog in the middle of cats" is a different kind of exclusion. The dog is fully visible, just the wrong species for the company it is in. Then comes "Extra like a ghost," the shortest line of the three. The mosquitoes had a night-time setting and the dog had its cats, but the ghost has nothing around it at all. The line is stripped bare, which fits an image of someone present but unseen. The movement from irritant to misfit to invisible is the emotional escalation of the poem, and it happens without a single explanation.
Then the tone drops: "And you don't care." The line is short and flat, with no image to soften it. After the vivid comparisons, the plain statement lands like a door closing. The final lines turn from picture to argument, and the accusation sharpens: "Even though you said you once felt extra." The person addressed already knows this feeling, so the hurt is not ignorance but forgotten empathy. "It sure seems like you don't care" is sarcastic, with a tentative surface and a hard edge underneath. The poem ends on "Cause you do it all the time," a casual, almost throwaway line that suggests a pattern rather than a single incident. There is no plea or threat, only a tired observation.
The form supports this voice. The poem is free verse with no rhyme and no stanza breaks, so the ten lines run on in one block like a complaint that has finally started coming out. The rhythm is uneven and speech-like, and the three similes work almost like a drumbeat, with "Extra as," "Extra like," "Extra like" hammering the same sound. The word itself appears eight times in ten lines. Repetition on that scale wears a word down until it starts to sound meaningless, which is exactly how the speaker feels. The small slip of "feels" for "feel" in the penultimate line, along with the clipped "Cause," makes the writing seem unpolished and hurried. Judging by the text, that gives it the quality of something written in the heat of the moment, closer to a message than a carefully filed-down poem.
What makes the poem worth reading is how precisely it names a very common feeling. Anyone who has been the third person in a conversation, a friendship or a pair of best friends will recognise the sensation, and the poem finds an everyday word to describe it. It also suggests that indifference can wound more deeply than cruelty. The speaker is not being attacked, only treated as if they weren't there, and the ghost image makes that vivid. By keeping its language so plain and its comparisons so well chosen, the poem makes a very small complaint feel large.