Throughout the book, the villanous "Aunt Polly" is portrayed as comically voluminous, topped with stereotypically bougeiois pince-nez and lacy collar.
“Aunt Polly was a real hog
-- This is what Tom told everyone."
This Tom is most like the image of the color, lacking only the hat with a mat of messy hair. Tom slyly and subersively winks, pointing to the adjacent text.
"In short, it was anguish for Tom with his aunt,
But in his aunt's purse was a key for the lock."