The first reports on Comey's book began to filter out on Thursday evening, in which he depicts the President as someone who plays fast and loose with the truth, and in Comey's mind, is more interested in loyalty, like a mobster.
It was only a matter of time until the President responded on Twitter.
Republicans were already planning a broadside to go after Comey, who began to unveil his book with television interviews, as copies of the book made their way into the hands of news organizations.
The headlines were certain to get under the skin of the President:
"In new book, Comey blasts untruthful, 'ego-driven' Trump," read one.
"In new book, Comey says Trump 'untethered to truth,' the AP wrote
The Republican game plan with the former FBI Director is simple - call him a liar - with a new Trump-like nickname: "Lyin' Comey."
On Capitol Hill, Democrats said the details of the Comey book just confirmed their thoughts on Mr. Trump.
"Comey is not perfect but Trump is evil," said Rep. Steve Cohen (D-TN).
Comey's media tour started with a five hour interview with ABC's George Stephanopolous, and will continue for days - which could draw even more Twitter rebukes from the President, who fired Comey on May 9, 2017.
An online archive of President Trump's tweets showed this was the first time he had used the term 'slimeball' on Twitter; back in 2014, he called reporter McKay Coppins a "slimebag."
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