Disclaimers and warnings in chapter 1.
Scotty had watched a little forlornly as his Captain disappeared into the ready room with the pert blonde - the engineer had heard that she still held onto her innocence - and he could imagine her wet lips framing the sweet sounds escaping her throat for the first time, skin slick with sweat as her eyes simultaneously begged him to stop and to continue her possession. He licked his own lips in response to his too-vivid imagination, and his hand snaked clandestinely down his front to grasp his hardening member, when sharp little teeth sank into the sensitive flesh where his neck and shoulder joined, forcing a rather embarrassing squeak from his mouth.
He tried to twist away, but hands stronger than he anticipated firmly gripped his waist, nails digging little half-moons in his hips. Scotty dragged a hissing breath between clenched teeth. "Be careful there."
"Shhhh." The moist breath was startlingly close to Scotty's ear, and the tongue that flicked playfully out to catch the shell of his ear made him smile, but obey.
The hands loosened their grip, and one remained lightly on his hip, as the other drifted lazily down Scotty's front, fingers running through the tight curls that clustered at his pelvis. He watched in silent fascination as the slender digits - such perfectly manicured nails - began to wrap themselves around the base of his cock, which had softened slightly due to the initial shock, but was now rapidly regaining its former glory. The hand tightened, moving in slow, sure strokes, and Scotty shuddered in response, reaching back to grab the warm body behind him, but the second hand that had rested on his hip quickly slapped his arm back into place. "Nuh-uh," a voice said warningly, the hand on his penis relaxing.
Scotty's eyes widened in alarm at the silent threat. "Okay, okay, sorry." The words tumbled out of him, and he leaned forward slightly to place both hands on the console in front of him. "I won't move, I promise."
The hand looked pale against Scotty's dark curls, unmoving, and for one terrible moment, he thought that whoever was behind him was going to move away and take its attentions elsewhere. But the long fingers tightened again around him, the other hand dragging its sharp nails roughly down his back. He felt himself tingle all the way down to his toes, but he resisted telling the hand that scored his back to do it harder.
A hot, wet tongue soothed the welts on his back, easing the sting, but sudden sharp teeth teased the pain back out again. His mind didn't seem to know what to do with the conflicting combination of pleasure and pain, and the nearly overwhelming sensations coerced whimpers from Scotty's throat that he hadn't even thought he was capable of. Words could barely be distinguished through the snarling moans and trembling whimpers, but a careful ear might be able to distinguish the most important.
"More."
"Faster."
"Harder."
The person behind him was nothing if not a sensitive listener. The hand was slick now, moving in an achingly perfect rhythm, and even as harsh whispers forced their way past his clenched teeth, Scotty could hear the person behind him moan deeply, and the fingers twitched unexpectedly around his painfully hard cock, pushing him closer to the precipice.
"Oh sweet M - " The teeth closed down on his neck again, tearing apart the oath with a growl that ascended into a wordless expression of pleasure. Scotty realized that the second hand disappeared now that the mouth was leaving perfect little bite marks down his back, and his blessedly cursed imagination exploded in him once again, providing a perfect picture in his head of what that other hand was occupied with. He could see those delicate fingers parting velvet folds, first slipping in one, then two, making sure to give special attention to that desperate piece of flesh, aching and hard, toying with it until an incandescent ecstasy threatened to explode from deep within the center. He thought of the fingers moving in the same rhythm as those torturing him, in time with their ragged breaths, each trying to maintain some semblance of control and failing.
The mouth dragged across his shoulder blades, frantic panting causing something low and visceral in Scotty to flutter in response, and he felt his orgasm looming - an inevitable wave crashing to the shore, unstoppable even if he wanted to.
His hand flew from the console of its own volition, grabbing the slim waist behind him and forcing the taut body against him. The ragged scream of release that echoed in his ear shoved him with a wordless cry over the edge, and distantly he felt traces of molten warmth create erratic patterns on his back.
Scotty's heart threatened to leap out of his chest as the hands tenderly folded themselves across his front, cradling him in an embrace. His own hands came up to cover those holding him, entwining their fingers together as his eyes fluttered shut, and he attempted to relearn how to breathe. Lips rested against his ear, curling up into a smile before the hands suddenly withdrew, the body melting back into the crowded bridge. Scotty grinned, eyes still closed, the knowledge of the owner of those capable hands coming in a flash of smug recognition.
A/N: Nope, we're not telling. We know who we think it was...you decide who you think it was...