Brain had a mountain of work to do on his latest plan. Trouble was, he'd skipped breakfast, and it wasn't doing his concentration any favors. As if that didn't complicate things enough, Brain was about to find out that Pinky had a certain... liking for the results of this mistake. How humiliating.

-----

As Brain labored away, elbows-deep in the device sitting on his workbench, Pinky couldn't help noticing that he seemed a bit distracted.

"Are you all right, love?"

"I'm fine," Brain said, his tone a little sharp.

He didn't really want to discuss the topic with Pinky, or anyone else for that matter. Just the thought of talking openly about those sorts of physical matters, especially his own, was hair-raisingly embarrassing.

"Oh, really? Because your stomach's been making funny noises all morning."

Brain flinched at Pinky's frankness, a hot wash of embarrassment crossing his face. 
"I was testing the machine," he lied, not looking up from his work. He prayed to whomever was listening that Pinky would drop the subject.

"If you're hungry, we could take a break, you know. I'll bet I could whip you up a really yummy sand--"

Now that Pinky had him thinking about it, Brain could feel a loud rumble building up just from the mention of food. He pinched his eyes shut. "NO! N-no Pinky, we can't. Not today."

"Aww, but Braaaain..."

"No, Pinky!"

Pinky knew it was pointless to argue with him about it directly, and instead decided to sit and listen to all the lovely (and obvious) growls Brain kept denying. The noise was surprisingly loud for a mouse Brain's size, and it had a nice, deep resonance to it. It sounded very needful, which Pinky liked a lot.

"Pinky," Brain warned, "if you're not going to help, please go away. I have work to do."

"Right! Sorry, Brain." Pinky got up and wandered off, but he wasn't about to give up... he just had to think of a good excuse to be near Brain. All those yummy noises were just going to waste!

"Ooh, Brain! Maybe I can help you after all," Pinky exclaimed as he ran back in.

Brain sighed. "How?"

"Weeeelll, I could be your moral support! I could cheer you on, and rub your shoulders, and stay niiice and close to you... erm, in case you need my help with anything, that is!" Pinky grinned extra-big, almost seeming to beg Brain to let him hang around. "We do make such a wonderful team, don't you think, Brain?"

Brain sighed. "Pinky... I'm not sure what you're up to, but I have neither the time nor the energy to worry about it. You may stay, if you PROMISE not to interf--"

Brain's fur bristled as a huge growl emanated from within. Pinky shivered a little; that was a loud one. He wondered how long it would be until he could get Brain's tummy to make those sounds on purpose.

"Oh, my," Brain said, turning bright red. 

Pinky shifted in place as he felt himself getting hard. "Mmf... Brain, I have to tell you something..."

"Not now, Pinky," Brain muttered, scribbling furiously.

"It's important, Brain. It's really, reeeally important." There was a hint of desperation in Pinky's voice. "You see, when I hear your tummy growling, I get--"

"Enough, Pinky!" Brain was growing exasperated.

Pinky decided to let his body make the point for him. He scooted close enough to Brain that he could feel Pinky's boner. Brain jumped a little at the sensation.

"Oh," he said, turning even redder.

"See? You're making me really horny, Brain," Pinky whispered. "Really, reeeally horny."

Brain, still making some attempt to get on with his work, had to pause at that. "Wh-... how, Pinky? What on earth am I doing that's having such an impact on you?"

"Well see, it's not you, per se. It's all the, um... noise you're making. It's getting me super, SUPER riled up."

"P-Pinky, that's just--" Brain stammered, unsure of how to respond. 

"It's only the truth, Brain. Can't lie when the evidence is in my lap, can I?" Pinky winked.

Brain was silent for a beat before he spoke, perhaps accepting that he was stuck in this mortifying discussion whether he liked it or not. "Assuming for a moment that you're not playing some sort of prank on me, Pinky... would you care to explain the connection between my, uh... calorie deficit... and your libido?"

Pinky grinned. "Oh! It's a lot of things, Brain. You're so cute when you're all embarrassed, and it's just so sexy to think about your body needing things, and about getting the chance to satisfy you. Plus, your body's really good at giving you away when you're too shy to talk about it, and that's REALLY hot..."

"Oh, that's absurd." Brain hadn't stopped blushing.

"But it's true! Your body gives the game away all the time, too, and I love it so much. When I hear your tummy rumbling, I know you're hungry. When you're cold, I can feel you shivering. When you're turned on, you get hard, and I can tell by your voice and your scent. And when you have to pee, you do the cutest little dance--"

"Okay Pinky, enough! You've made your point," Brain cringed.

"Have I, Brain?" Pinky leaned in a little closer. "So, does that mean we can go to bed and talk about it some more? Just you and me, where it's quiet?"

Brain looked up, and saw the familiar glint in Pinky's eye. "Well, I, uh... I've got so much to, uh..." he fidgeted.

"Oh, Brain," Pinky tutted. "How much work are you really getting done? You might as well let me show you some things, and then I can feed you a nice big lunch after, hmm?" He put his arm around Brain, stroking his ear gently. "Then you'll be all fueled up and ready to be clever again."

Another small rumble.

"Your tummy's making noises again," Pinky mused. "It's not very happy..."

"Pinky, p-please," Brain stuttered, squirming a little.

"Aren't you feeling hungry? Your body's being very honest," Pinky teased.

"I'm n-not..." Brain began. Then he paused. "No."

As if determined to embarrass him, Brain's stomach made a liar of him with a growl that went on a bit too long, and was VERY easy to hear at such a close proximity. He froze, sweating.

"Wow," Pinky giggled, "that was a good one. You must have a monster in there!"

Brain's voice was weak. "You're not helping."

"Did I short-circuit you, love?" Pinky grinned.

Brain didn't respond right away, which gave Pinky an opportunity to admire the effect his attention was having. Brain's face was crimson, his breathing was heavy, and his cock was hard. His little hands were gripping the edge of the table so hard his knuckles were white.

"Aww, try not to be TOO embarrassed, darling. It's just me, after all." Pinky gave him a squeeze.

Brain whimpered.

"Well, I guess we'd better get started then, hmm?"

Pinky stood up and reached for Brain's hand; he took it, and let Pinky lead him back to the cage. Brain was too mentally vapor-locked by embarrassment and arousal to say anything, so he followed Pinky's lead. This was his strange kink after all, surely he'd know more about how it worked.