Jim's legs spread wider apart as Spock bites down on the inside of his thigh, gasping breathlessly at the flicker of pain, and the knowledge that Spock's teeth will definitely leave a mark behind. Just how he likes it.

He doesn't like the teasing touches quite as much, though, not when they're so few and stop so soon after. Jim doesn't even get to roll his hips up towards those strokes before Spock stops again, hand tight around the base of his cock, but the whine's literally choked out of him when he wraps his other hand around Jim's throat. Again, too brief and gone too quickly.

Breathing out, he lets out a frustrated moan, letting his head fall back for a moment. He takes a deep breath and licks his own lips, gaze as steady and calm as he can manage when he looks back to Spock again. "Please... give me more, please." Pain, pleasure, at this point Jim couldn't care less what Spock goes with. So long as he gives him something, anything at all to make him feel good and drive away the intense frustration that's piled on. "Please, sir... t'hy'la..."