Author's Note: Jim is still a cadet in this one. Enjoy!
Jim looked up at the windows of Starfleet Academy, and caught sight of the hot Vulcan guest Professor Spock. He bit his bottom lip hard. Not only was the guy hot under normal circumstances, but now he was irresistible; his cock was out and pressed against the glass of the window. Jim didn't know if he was satisfying a kink, or trying to cool his cock down, but either way it was hard – he let out a whimper – and green.
Without thought he calculated the Vulcan's exact position, and headed in that direction as quickly as he could – without drawing untoward attention on himself. No one paid attention more than if they saw someone running, but a purposeful walk? Barely ever – though he was worth a second look, let alone a first.
He arrived at the right door, and had it open in a matter of seconds – his old skills still came in handy now and again. The Vulcan didn't turn, though he clearly heard the door since his eyes shifted in the glass. "I might not be your preferred partner," he breathed, aware his lust was evident, "but I give oral as well as any woman."
"Is that so?" the Vulcan murmured.
"Yes," he replied, voice going breathier. "If you turn so your back is to the window, no one will ever know."
"And if I wished it to be known?" he drawled, turning to lock eyes with Jim over his shoulder.
Jim licked his lips. "No problem," he replied easily. "Though I would have a few conditions," he added.
Spock turned to face him fully. "And what would they be?"
"You would have to fulfil my needs, either with touch or toys," he stated, voice firm even with his breathiness.
"Fascinating," he murmured. "Do you want my cock, Cadet Kirk?"
"Yes," he moaned.
His eyebrows arched. "You offered a service, did you not?"
"God yes," he panted as he crossed the space between them in seconds, dropping to his knees gracefully. He swirled his tongue over the leaking slit – he was right, Spock's cock was green – before he took the first head into his mouth. He couldn't help his moan, he loved the feel of a cock on his tongue, and always would.
He took the second head into his mouth, and stayed like that for a moment, enjoying the double sensation, before he swirled his tongue around them, pretty sure the heads of Spock's cock would be just as sensitive as his own.
Spock let out a soft noise, which Jim took as encouragement. He began to bob his head in earnest, easily taking the Vulcan's long, thick cock deep with every stroke. God, he loved it when he got his hands on a big cock – well, his mouth, or his ass, technically speaking. He never could get his mind to turn off, even if it was only thinking of the sex he was having.
He took the Vulcan's cock deep once again, pressed his lips against the brunet's pelvis, and swallowed. Spock let out a moan as he came. His eyes filled with satisfaction, Jim rose up off of the Vulcan's cock until only the heads were in his mouth, and then he swallowed.
Spock threaded his fingers in Jim's hair, and sensing the human's thoughts, tightened his grip. Jim couldn't help his moan, which turned lewder as he felt the Vulcan harden against his tongue. "You truly enjoyed that," Spock murmured as he gently tugged the blonde's head back. His cock spilled from the human's mouth with a lewd pop.
"Oh yeah," he panted. He couldn't describe how much he loved sucking cock, but then again, from what he'd heard about Vulcans, maybe he wouldn't have to.
"No," Spock murmured, "you do not."
"Sorry if my thoughts were distracting," he breathed, shifting slightly.
"Your need is painful," he murmured, and tugged the blonde onto his feet. "We should fix that," he continued, using his free hand to free Jim's cock from his uniform trousers. He let out a soft moan. "Did that not help?" he asked, shifting his grip until he cupped the blonde's cheek. "Ah," he murmured. "Not enough stimulation," he continued, and wrapped the fingers of his free hand around the human's shaft, his mind noting the differences in their physiology, even as he began to stroke. His lips curved at the blonde's moans, able to tell through his gifts exactly what his companion required.
It took little time for him to send Jim over the edge, and stroke him through it. He raised his hand to his mouth, licking his hand free of the blonde's seed. "That is seriously hot," Jim panted as his cock stirred.
"Fascinating," he drawled, lips curving in a slight smirk at the blonde's shiver. "Your stamina could rival my own."
"Want to find out?" he offered breathily.
"Very much so," he replied easily. "However, first, I believe we need to have a discussion as to what your needs truly are."
Jim let out a sigh. "Fine," he huffed. "But more sex after?"
"Of course, Jim," he added, a slight smile curving his lips.