NOTE: Make a day ahead for a great party centerpiece. You will need a large (10 inch) flower pot (no hole!) and some artificial flowers.
Cream sugar and cream cheese. Beat milk, pudding and vanilla until thick, then add to cream cheese mixture. Fold in Cool Whip. Grind Oreo cookies in blender.
Layer Oreo mixture and creamy mixture, hiding gummy worms in flower pot, ending with cookie mixture on top. Chill overnight. Put flowers into "dirt" and surprise your guests when you serve your centerpiece for dessert! Makes enough for 2 pots.