Two lines are enough here for a whole small drama: an insult, a victim, a defender. Bai's poem opens with gossip delivered at point-blank range, "They say my cat is fat right to her face". The second line then turns the accusation around, so that the people doing the mocking become the cause of what they mock.
The first line is steady and compact. It runs to ten syllables with five clear beats, close to the rhythm of a classic pentameter line, so it sounds like a flat statement of fact. "They say" is anonymous and faintly cowardly, a crowd with no names. "My cat" is the opposite, a phrase of ownership and affection. The cruelty sits in "right to her face". It is slightly comic to give a cat a face that can be insulted, but the phrase also grants her a dignity that can be wounded. The sounds help, too. "Fat" and "face" begin with the same sharp *f*, so the insult lands almost twice in a row.
Then the poem changes pace. The second line is roughly double the length of the first, about twenty syllables against ten, and it spills past the tidy shape the opening established. The defence needs more room than the attack did. There is no end rhyme, either: "face" and "skinny" never chime, so the poem refuses the neat click that would make it feel finished. The comma between the lines, where a full stop might have gone, makes the reply sound like an interruption, as if the speaker could not wait for the gossip to end.
Two small words carry a lot of the tone. "Maybe" is a hedge, the voice of mock-reasonableness, and it makes the accusation that follows sound more cutting for being so politely offered. Then "they" becomes "you". The rumour-mongers were a faceless crowd in line one, and in line two the speaker turns and addresses them directly.
The key phrase is "bring her down". It works on two levels: to lower something physically, and to lower someone's spirits. The poem plays on that double sense. To be brought down is to be weighed down, so the metaphor of heaviness turns from the body to the mood. Notice also that the line never says "fat" a second time. The cat ends up feeling "anything but skinny", a phrase defined by what it denies. And the verb has changed. In line one she *is* fat, a verdict handed down from outside. In line two she *feels* something, and we are suddenly inside her experience. The hidden argument is that a remark about a body is never neutral. It changes how that body is lived in, and so it can bring about the very thing it claims merely to observe.
The poem's vocabulary also invites a second reading. "Face", "feels" and "brought down" are words more at home with people than pets. I would say, as an inference from the language alone, that a reader may hear a person being body-shamed here, with a loving defender speaking on their behalf. A cat cannot answer back, and neither can many of those who are talked about "right to their face". The speaker answers for her. The poem works perfectly well on a literal level, though, and its deadpan humour depends on the cat being a cat.
What makes it worth reading is how much it does without quite denying anything. The speaker never claims the cat isn't fat. Instead, the speaker accepts the premise and questions the cause, which is a cleverer and more unsettling move than a simple "no she isn't". It shifts the blame from the one who is mocked to the ones who mock. The last word, "skinny", is light and almost childish, and it ends the poem on an unstressed syllable. It lingers as the very quality the cat has been talked out of, and the quiet sting of that ending stays with the reader.