In a large mixing bowl, whisk together the chocolate pudding mix and milk until smooth.
Allow the pudding to sit for 5 minutes to thicken.
Gently fold in the whipped topping until well combined.
In a serving dish or individual cups, add a layer of crushed Oreo cookies on the bottom.
Pour a layer of the chocolate pudding mixture over the cookies.
Add another layer of crushed Oreos on top of the pudding.
Repeat the layers until all ingredients are used, finishing with crushed Oreos.
Top with gummy worms for decoration.
Chill in the refrigerator for at least 1 hour before serving.
Serve and enjoy your delicious dirt pudding!