Yumi steps back a bit, nervously waiting to see whether Ami manages to stomach this sludge or if she'll spit it back in her face. After a few awkward moments, Ami quickly pulls the plate closer to herself, cutting off a much large slab of... Whatever the stuff was, and not even shuddering as she chewed it happily in her mouth.
"'Atta girl Ami! See, if you judged a book by its cover you might've been missing out on some great dining..." Picking up a piece with her bare hands, Yumi takes a large bite, completely taken aback at the strong taste, as if a steak had been left behind the radiator for several months, then re-cooked. "... *Groan* Oh god I think I'm gonna hurl..." Holding her stomach and barging past anybody who stood in her way to the bathroom, Ami merely shrugged and downed the rest of the dish, honestly enjoying the exotic cooking this cheap roadside diner had to offer.
By the time Yumi groggily came out Ami was still making a heavy dent in the vast quantity of food she'd bought her, managing a smile as she saw her stuffed belly starting to bloat up from underneath her baggy t-shirt. Waddling back to the table she noticed Ami had already adapted some of her own patented pig-out techniques.
"*Mmpth* Hey Yumi... *URRRRP!* Did'ya know that using you hands..." She stockpiled another several handfuls of stale blue bread into her mouth, speaking with her mouth full after small gulps, "reduces the time to bring food to your mouth? *URRRRRRP* Whoops... Excuse me!" Wiping her mouth clean, Ami admired her handiwork as she robbed her globular basketball belly. "Awwww, look at it Yumi! Like a bun in the oven... Though it's going to become all doughy by tomorrow!" Yumi simply gave two thumbs up, avoiding to speak lest she spend another half-hour head down in a public toilet.
"Hey, you alright Yumi?! You're looking kinda pale there... Oh well, just more for me then!"
As the night trailed off, Yumi admired just how far her little piggy prodigy was doing, while Ami ate to stomach's content, which wound up being even more then either of the two could've ever guessed.
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When the two finally returned to the tour bus, the diner behind them nailing shut their windows and moving out furniture and equipment due to a certain customer finally managing to stomach all of their cooking and supplies, let a lone any of it, Ami and Yumi admired her stuffed belly, smiling through the minor discomfort the sheer amount she'd eaten had caused. "Well Ami, you've made me proud. If you could devour whatever the heck that stuff was and have enough room for seconds, then there's no way you're not going to be able to out-blimp Julie within a few months!" After the two laugh a bit, Ami snacking even further on the few cans of food they could salvage from the kitchen, Yumi went to her room for the night to hit the hey after a hard night 'testing' Ami's potential to eat.
Or was going to, until Yumi realized before nodding off in her bed one crucial detail.
"Ami, wake up! I just remembered- Eh... What's up with your stomach?" As Yumi rushed in to see her finishing off a simplistic smiley on her belly, Ami tries to pull her PJ top over her stomach and acts oblivious. "Erm, eh... What about my stomach? Larger then you remembered?" Shrugging it off for the time being, Yumi quickly pointed out that neither of them had yet thought up of a long-term plan of them gathering enough money to fund Ami's ascension to plumpdom.
"Yeeeah, today was fun and all but if we're going to surprise Julie it's better if we don't live off obscure crummy $5 buffets and get some real food. Like boxes of heavily processed cheese balls and a Slurpee machine!" Noticing Ami had already started zoning out and drooling at the thought, Yumi snaps her back into reality. "Ami, earth to Ami; concentrate here! That's 5 pounds you gained at most tonight, and we probably only have enough spare cash to do another couple weeks. By the time Julie catches on she'll probably be larger then this bus next thing we know it! She probably already has the fortune to get it done anyway. We gotta do this fast and efficiently, I just don't know how..." As Yumi thinks to herself, head resting against Ami's belly, the stuffed singer comes up with a plan.