I know blueberry inflation is entirely within the realm of fantasy but I've always wondered what actually happens inside the person when exposed.

There doesn't seem to be a whole lot of stuff online and what is there is lacklustre at best and not very imaginative. It'd be cool to see something that explores the anatomy and whole process of blueberry inflation, such as how the juice accumulates and seemingly self-replicates, what happens to particular organs, how the juice travels throughout the body, what happens when they get too full, why their nose turns blue first, etc.

It's entirely up to the imagination but it's still very interesting to try to make some sense out of it. I'm no expert on biology but I'm interested to see people's different interpretations on it.