Pineapple Pie

1 baked graham cracker crust

1 can sweetened condensed milk (14 oz)

½ cup lemon juice

1 can crushed pineapple, drained (20 oz)

1 tub carton cool whip (8 oz)

Combine milk and lemon juice.  Stir well.  Fold in pineapple and cool whip.  Spoon into graham cracker crust.  Chill