Tweety. I like stretching

I'm gonna need some clarifications here. Does the stick/cone/tube go for the ride? How far up the ass does it need to go? Is this a proper insertion or a wedding-cake photo-op mushing situation? If it's insertion, can the ice cream be modified to fit the butthole, or must the butthole adapt to the ice cream? There's a lot of moving parts and complex interplay going on.