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> Mama dances, laughs, dances. All of a sudden, Mama is sick. I fan her hot face with a paper plate. Too many tamales, but Uncle Nacho says too many this tilts his thumb to his lips.
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> *The House on Mango Street* - Sandra Cisneros
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What is "too many this tilts his thumb to his lips"? Is it a metaphor? If it is not, what is it? An action that meaning something else?