1. Chill unopened can of evaporated milk in the refrigerator overnight.
2. Dissolve jello in hot water and chill till partially set.
3. Whip till light and fluffy.
4. Add lemon juice and sugar.
5. Whip the chilled milk; fold in jello mixture.
6. Line the bottom of a 9x13 pan with half of the graham cracker crumbs.
7. Gently pour bisque mixture into pan (if you pour to fast you will move the crumbs).
8. Top with remaining crumbs.
9. Chill till set; about 5 hours or a little less.
10. Serves 12.