Matt McClain/The Washington Post via Getty Images; Brandon Bell/Getty Images
- Cohen took a shot at 'liar' Trump before meeting Friday with Manhattan 'hush-money' prosecutors.
- Trump's ex-lawyer is the key witness linking Trump to the $130,000 payment to adult film actress Stormy Daniels.
- Prosecutors will decide 'soon' on seeking a grand jury vote to indict Trump on the 2016 payment, he said.
Donald Trump's fixer-turned-nemesis said Friday that the former president is too much of a "liar" to ever agree to testify in his own defense before a state grand jury now hearing evidence in the Manhattan district attorney's hush-money probe.