To Make Crust: Mix together 2 2/3 cup graham cracker crumbs and sugar. Stir in melted butter or margarine. Press mixture evenly into a 9x13 pan.
In a large bowl combine lemon pie filling, condensed milk, lemon juice, and fruit cocktail. Stir until thoroughly combined. Spread mixture over graham cracker crust. Top with whipped topping. Sprinkle with 1/3 cup graham cracker crumbs. Freeze overnight before serving. Freeze any leftovers.