Why Trump is so bothered by his new 'nasty' nickname

President got testy with a reporter last week who asked him about a new acronym labeling his trade policy: Taco - Trump Always Chickens Out.

During a Wednesday back-and-forth in the Oval Office, Trump was asked about the term by CNBC's Megan Cassella, which had been coined in a column in early May .

Trump lashed out in an almost cartoonish way, akin to Michael J. Fox's Back to the Future character Marty , whose famous line was, 'nobody calls me chicken!'

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