JOHN CHUCKMAN'S GROTESQUES: MACKAY - PETER HAS ADOPTED A NEW TIGHT-LIPPED POLICY - IT APPEARS TO BE THE ONLY WAY THE POOR BOY CAN STOP MAKING DORKY AND EMBARRASSING COMMENTS - MAYBE HE'S GETTING THEM STITCHED UP JUST TO BE SURE - THE HORSE MAY BE OUT OF THE BARN THOUGH: HARD TO THINK OF MANY TOPICS WHERE HE HASN'T ALREADY BLOWN IT