1 (6 oz.) pkg. Jello (any flavor)
3 1/2 c. hot water
1/2 c. lemon juice
1 1/2 c. Cool Whip
1 1/2 c. graham cracker crumbs
1 c. sugar

Dissolve Jello in water. Chill until partly set. Whip until fluffy. Mix in lemon juice, sugar and Cool Whip. Spread 2/3 of crumbs in a 9 x 13 pan. Pour gelatin mixture on top of crumbs. Sprinkle the rest of the crumbs on top and chill.