Slice bananas; pour lemon juice over them and set them aside. Then, crush your cookies up into small crumbs in a medium bowl. Pour melted butter over cookies and mix well. Press cookie mixture in the bottom of a 9 x 13 pan. (I use a lasagne pan, because it holds more.) Set aside. With an electric mixer, mix together the cold water, instant pudding mix, sweetened condensed milk until it thickens. Then fold in the Cool Whip. Pour this pudding mixture on top of the cookie crust. Spoon pineapple on pudding mixture; then layer on the sliced bananas. Cover with 2 more cups Cool Whip and sprinkle with pecans and decorate with cherries. Leave in refrigerator overnight.