Better than sex cake

I am making Robert's birthday cake. The person who made it for us first called it better than sex cake, but it looks unlike other recipes I have seen for other cakes with the same name. So here is our version ...

1 boxed butter cake mix, prepared
1 can crushed pineapple
1 cup sugar
1 pkg vanilla pudding, prepared
1 pkg cool whip

Once cake baked and cooled, use a fork to poke holes all over cake.

In small pan heat pineapple and cup of sugar. Bring to a boil and pour over cake. Let cool.

Mix pudding and cool whip and pour over cooled cake. Keep cake refrigerated! So yummy! Happy Birthday to Robert!