Banana Split Icebox Cake

carton ((16 oz) whipped topping, thawed)

sour cream

package ((3.4 oz) instant vanilla pudding mix)

((8 oz) crushed pineapple, drained)

Whole graham crackers ((almost a whole box))

medium bananas (, sliced thin)

Toppings: sliced bananas (, sliced fresh strawberries, whipped cream and chocolate syrup)