Tie in a roll with a piece of strong twine around the middle and leave long ends on both sides of the knot. Seat childer in comfortable positions where they will have a good view. Locate nearest Jack Russell Terrier(s) and lure back to your yard by swinging the rolled calendar by the strings just out of reach like a piņata. Have children count to 3 as you swing the roll higher and higher above the hysterical dog(s). Release. Duck and run. Enjoy the subsequent destruction with the kids.