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Phrase(s): How bout them apples? [and] How do you like them apples?
Rur. What do you think of that? (Often used to express admiration, as in the first example; bout is short for about.) • Tom: I got first prize! Mary: Well! How bout them apples? • Joe got a job as a newspaper reporter. How do you like them apples?
McGrawhill's American Idioms And Phrasal Verbs