Body inflation

I’m thinking of learning to bloat and/or inflate

Are they the same? I would love to see my belly blow up. I understand that I can extend my belly to consume more food and create a cycle of eating more, gaining more, expanding more, etc.

Do I use water? Soda?
Is food stuffing similar? Liquids will clear the body much faster than food; food has the added benefit of calories.

Are there foods that are particularly good at absorbing liquids and expanding in the stomach?

I don’t have access to an air pump so I wouldn’t be able to do that.
3 weeks