MDNI

i dont knowwwwwwww i like a guy with a new york accent

“So, it starts with mastication. We can fit much bigger whole objects in our mouths than you guys seem to – be able to.” Pausing only briefly for a hiccup and a wince, Grace pointed at his mouth. “We break it up mechanically, with our teeth and our tongue. See?”

“Rocky see.”

Grace had forced himself up into a sitting position, leaning back against the padded wall with his quilt around his shoulders. He hadn’t wanted to move, had felt the contents of his bloated stomach shift and slosh with every motion, but he’d known he would feel better once he was upright. The human digestive system had evolved to work in tandem with gravity, as he’d explained to Rocky when he asked why he was moving around when it obviously hurt him, based on the whimpering.

Rocky was between Grace’s legs in his xenonite ball, three legs folded beneath him like a loafing cat, two held out in front, claws spread against the panel currently pressed against the firm mound of Grace’s belly. He’d tugged his jumpsuit down and his T-shirt up in order to expose it, pale skin and dark golden hair, and it wasn’t the most comfortable position, but Rocky was curious...and warm, even through the xenonite.

It actually felt really good. Grace was kind of wishing he could sleep on his chest, but even in low-g, he’d probably break his ribs. Too bad.

“Rocky not have ‘mouth.’ Thought was wound, when first saw Grace.”

“Yeah, you guys are a sealed system most of the time; it’s cool. Anyway.” Arms draped over the top of the ball, Grace held back a belch. “Inside the mouth, there are glands that constantly secrete a thin mucus. We call it saliva. It keeps the tissue soft and wet – it doesn’t have many other protections, it’s epithelial tissue – and it also helps break down food further. There’s the moisture aspect, but it also contains enzymes. Chemical digestion starts in the mouth. That always…” Grace smiled wanly. “Surprised my students.”

“Grace sad,” Rocky observed. “Eat more now, question?”

“I think I’ve had more than enough, buddy.”

“Understand.” Grace had probably spent too much time with Rocky; he was starting to read emotions into the text-to-speech program he knew weren’t there. For example, disappointment.

“And from there, once it’s become a soft bolus, we swallow…”

Grace went on, past the epiglottis, down through the esophagus, to the stomach. Rocky listened, only commenting once to lament the sheer inconvenience of the digestive and respiratory systems sharing an opening. Grace agreed with him before continuing. Gastric acid (Rocky was terribly intrigued by the mechanism of hydrochloric acid contained in something as fragile as a human body), peristalsis, gallbladder, pancreas, small and large intestine, colon…

“And you - ” Once again, Grace stifled a burp, which he’d been doing all through the explanation. He’d really overdone it. “Know what happens after that.” It’d just seemed rude not to return the favor after what Rocky had let Grace watch him do.

“Why Grace do that, question?”

“Do what, question?”

“Hold air in.”

“Oh, right. So, that’s, uh…” Grace took his glasses off and rested his forehead against a pane of xenonite, closing his eyes. Warm. “Either air that’s swallowed while eating, or gas that’s produced by digestion. Causes discomfort, but it’s rude to let it out in front of other people.”

“Not rude for Rocky. Only disgust when Grace eat.”

“Thanks for that,” Grace mumbled.

“Grace not discomfort enough, question?” Rocky asked, and somehow, the TTS voice sounded dry to Grace.

“Okay, yeah, fine. Good point.” Grace forced himself to let out a belch, blushing slightly.Ugh, there were the sour Skittles.Of course Rocky didn’t care.

“Rocky see lot of air in digestive tract,” Rocky observed. That was one of many interesting things about Eridians: their echolocation was more like that of cetaceans than bats. They could see inside objects, especially objects as soft and penetrable as a human body. Like an X-ray. Grace sometimes wondered what Rocky knew about him he didn’t know about himself. Not this; he’d already been able to feel how gassy he was.

“Yep, that happens to me,” he mumbled.

“Grace do this before, question?”

“I’ve always been a stress eater. Surprised it took this long, honestly. With – everything.”

Grace knew that Rocky knew by now that he didn’t really like talking about Earth except in the most general sociological terms. That seemed to be fine with Rocky, who also didn’t seem to like talking about Erid, especially his mate or the dead members of his crew. Rocky changed the subject.

“Rocky not believe human stomach ♪♫♫.”

“Okay, that’s a new word.”

“Soft, shape change. Stretch.”

“Ahhhh, elasticity. Elastic.” Grace reached out with one hand, entered the new words into the database. “Yeah, it’s probably one of our more elastic organs. It was feast or famine for our distant ancestors, so we’ve still got the ability for it to stretch pretty far out.”

“Rocky tell,” Rocky said, and he didn’t have eyes, but Grace could feel him looking at his stomach. He might’ve said something snarky, but he burped again before he could. “Eridians not change shape like this. Carapace rigid. Grace round, soft. Fascinate.”

“Well, I’m glad one of us is enjoying this.” Eyes still closed, Grace rested his chin on the ball, feeling the warm points of Rocky’s claws against his belly. It made him feel a little better.