You do not do, you do not do Any more, black shoe In which I have lived like a foot For thirty years, poor and white, Barely daring to breathe or Achoo.
The poem starts with the speaker declaring that she will no longer put up with the black shoe she's lived in, poor and scared, for thirty years.
She uses the second person throughout the poem, saying "you," who, as we find out, is "Daddy." So that means that she's comparing her father to a shoe that she's been living in very unhappily – but she's not going to put up with it anymore.
This stanza reminds us of a nursery rhyme – the old woman who lived in a shoe. The repetition of "you do not do" in the first line even makes this stanza sound a little singsong-y. But this is no happy nursery rhyme – the speaker is poor, and won't dare to breathe or sneeze, meaning that she feels trapped and scared.