A plethora of inside histories of Bush and the war have helped shape the political debate in recent months. Taking a walk on the lighter side is a new humor book called Bad President by R.D. Rosen, Harry Prichett and Bob Battles. The authors, not coincidentally, created a line of bestselling humor books for Workman Publishing called Bad Cat and Bad Dog (captioned photos of weird pets) and Bad Baby (enfants terribles). Applying this technique to politics, they have produced Bad President, in which the jokes are interspersed with reality checks headed “The Sad Truth,” intended “to introduce the realities on which the humor is hung,” explained Workman editor Susan Bolitin.