Define "viable." :)
A few scenarios that you could spin into your belly-to-body story (and I like Darth's suggestion too--revenge fantasies always work well):
Spies! Female agent undercover gets caught, "tortured" by mad scientist.
Genetics! There's this one girl who's basically a mutant, normal to all appearances but for the fact that she can breathe really deeply. It makes her oversensitive and her new boyfriend completely crazy with lust.
Wonka! An older Violet returns to Wonka for a second visit, realizing that she has been craving another inflation and it's taken on a more sensual context.
Don't expect your first story to do everything right, but don't hold back either--see where writing a story takes you, and then when you've had time to think about the first one, then you can choose a new scene and try a second one. But the only way to do it is...to do it. Does that make sense?
I swear, one day, I'm going to do the body inflation Mad Libs. :)
She is inflated with helium by her boyfriend's lover!
Why x rated?
- Read my stories: darth-clone19.deviantart.com