Former President Donald Trump’s erstwhile attorney and fixer Michael Cohen is making a promise to his former boss: He’ll stop talking about the Manhattan criminal trial in public until he takes the witness stand to take down the ex-president. Cohen made the mocking promise in a post to X on Wednesday. “Despite not being the gagged defendant, out of respect for Judge Merchan and the prosecutors, I will cease posting anything about Donald on my X (formerly Twitter) account or on the Mea Culpa Podcast until after my trial testimony,” posted Cohen, ending his comments with, “See you all in a month…