I think the DestapaBanana is a device that sucks the insides out of a banana while it is still in its peel, so that you can fill resulting cavity with the filling of your choice.
The creator of DestapaBanana comments: "The message is clear, DestapaBanana values and increases the current sales volumes, highlights bananas as a new type of desert and open the doors to more businesses and consumers."
Link | Bad-acid-trip-style marketing video