Dirt cake starts by making a large package of chocolate pudding according to the recipe on the box. Then when the pudding is cool mix in a tub of cool whip. For the crust, freeze Oreo, or other chocolate sandwich cookies overnight, then use a food processor or blender to crush them. They can also be crushed using a hammer and large plastic bag. Put a layer of cookie crumbs on the bottom of the pan, and put some gummy worms on top of the crust. Pour the pudding and cream mix over the crust and spread it evenly. Then sprinkle the top with more cookie crumbs. More gummy worms can be added if desired.