Christmas Cake

Ingredients

• 1 (18 ounce) package yellow cake mix (butter flavor preferred)
• 3 eggs (or as called for by your cake mix)
• 13 cup butter (or as called for by your cake mix)
• 1 13 cups water (or as called for by your cake mix)
• 2 cups sugar
• 1 (16 ounce) container sour cream
• 1 (12 ounce) package frozen coconut, thawed (Do not substitute dried flaked coconut. It must be frozen or filling will not have proper consistenc)
• 1 12 cups frozen whipped topping, thawed