Body inflation

I've always wondered if dry oatmeal or rice or bread dough would work - it would take longer than instant potatoes but wouldn't it be cool to have the gradual growth during the day and feel your clothes tighten so by the end of the day you felt like you completed something big?

How do you eat the instant mashed potatoes best? That powdery stuff is so dry - what are your ways to get it eaten?

Has anyone tried raw oatmeal cookie dough. I hear raw oatmeal can work but is hard to get down. This would at least taste better...i wonder if it would have the same effect