Wit isn't a useful instrument of defense; it may make a short-run appeal, but it creates a backlash- one saw this in the Hiss case and the Oppenheimer hearings; certainly one saw it in the trial of Oscar Wilde.
Listen to the cry of a woman in labor at the hour of giving birth - look at the dying man's struggle at his last extremity, and then tell me whether something that begins and ends thus could be intended for enjoyment.