01 - Whisk together the instant chocolate pudding mix and cold milk in a large mixing bowl for 2 minutes until mixture thickens.
02 - Gently fold the whipped topping into the pudding mixture until fully incorporated and smooth.
03 - Process chocolate sandwich cookies in a food processor or place in a zip-top bag and crush with a rolling pin until fine crumbs resemble soil.
04 - Distribute cookie crumbs across the bottom of 6 serving cups. Add chocolate pudding mixture, then repeat layers, ending with a generous topping of crumbs.
05 - Press 2 gummy worms partially into each cup's topping to create a crawling effect. Refrigerate for at least 1 hour before serving.