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Use "flatfeet" in a sentence
"He was very eager to move me along, ready to promise me the moon...then I mentioned “flatfeet.”"
"He had me take off my shoes, stand up, stand on the edges of my feet, then told me that I could ‘get by’ — obviously or so it seemed to me concealing my ailment, whatever it means to have flatfeet."
"Those Toledo flatfeet are too bent for us Chicago gangsters, boss."