Title: Rational Irrationality
Characters: Kirk, Spock
Warnings: Smut. Math.
Notes: Another one for the crackmeme. OP asked for math!porn. I helpfully provided some.
From this prompt:
Kirk/Spock, Spock/Uhura or Spock/Chekov. Whoever you pick, Spock’s partner just gets it about the math.
Strip is from xkcd by Randall Munroe.
Spock panted, desperately clinging to his fraying control as Jim writhed atop him, clenching around him, rhythmically, squeezing out the Fibonacci sequence around his aching flesh. He wouldn’t last long, like this. It was brilliantly distracting in all the right ways, in all the wrong ways, in all the ways a thing could be brilliantly distracting. His lips opened, and the most calming chant he knew spilled between them.
"Three point one four one five nine two six five three five eight nine seven nine three two three eight four six two six…"
Jim laughed, breathily, but didn’t break pattern. He was getting up into rather large numbers, and the breaks between numbers were spaced farther and farther out. Spock’s teeth clenched, his fingers digging tightly into Jim’s hips, and the litany continued.
"… four three three eight three two seven nine five oh two eight eight four one nine seven one six nine three…"
And somehow, miraculously, Jim didn’t lose count. Neither did Spock. The numbers wound together — Spock naming another, with each flex of Jim’s tight body, around him.
"… nine nine three — nnh!"
Spock’s eyes rolled back, as his spine tightened, and he emptied himself into Jim’s waiting body, shuddering and gasping.
"Nine seven four nine four four five nine two three oh." Jim carried out a few more digits, with an exhausted grin, sliding down into the cooling pool of his own ejaculate on Spock’s belly.
"You missed a zero," Spock pointed out, panting dizzily.
"No, I didn’t. Your last digit was a zero. I heard that ‘oh’," Jim muttered.
"That wasn’t a digit. I promise."
"Crap. I missed a zero." Jim grinned, lazily, into the side of Spock’s neck. "So, in binary, next time?"
Spock groaned, witlessly. "I believe you are trying to kill me."