Donald Trump attends a hearing in his felony hush money case in Manhattan.Spencer Platt/Getty ImagesLeaving his NY hush-money trial Friday, Trump said he plans to testify in his own defense.This was soon after he sat through a hearing on prior acts the DA hopes to cross him on.Trump would be confronted on his history of lying, falsifying documents, and ignoring judges.If former President Donald Trump keeps his promise to testify at his hush-money trial, cross-examination could get ugly.Manhattan prosecutors said Friday that they want to grill Trump about that time he lied under oath, as the judge in his civil fraud trial found in October.Prosecutors want to roast him on the stand for violating court orders, as the same fraud trial judge also found, in repeatedly citing Trump for gag-order violations.And they want to barbecue Trump over the way he seemingly couldn't stop defaming writer E.