…Tell your grandson, when he has a moment, to take a large Hefty garbage bag and fill it halfway to the top with jello and yogurt. Fill the rest of the bag with marbles. Mix them all together. Ideally, the bag should weigh between 90 and 100lbs. Now, have him tie the bag shut, very tightly, and rub the outside in Vaseline. Then collect as much dog poo as possible and apply that to the entire surface of the bag. Try not to miss a single spot. The poo should stick to the Vaseline quite easily. Now, have him pick up the bag, and carry it from room to room as quickly as possible. As he attempts to do this, you and your other grandchildren should follow him closely, squealing at the top of your lungs, and kicking him.
It's kind of like that.