Work Text:
The fluorescent lights on the ceiling of Donnie’s lab showed down on him as he tinkered with some piece of Kraang tech he had found in the junkyard a few weeks ago. What something like that could’ve been doing there? He had not a clue, but was glad he’d discovered it so it wouldn’t fall into the wrong hands.
Casey, without a sound, slid through the heavy doors of the turtle’s sound-proof laboratory. He’d been slightly worried about the genius terrapin lately. It seemed that Donnie refused to give himself a break from his work, and it was making Casey nervous that he would work himself past exhaustion. His reptile boyfriend was always doing something in the lab, even on holidays. However, today was Valentine’s day, and Casey had decided he would do whatever it took to get Donnie’s attention.
Suddenly, Donnie felt Casey’s warm, tense body press up against his shell. He shivered as the humans' cold, calloused hands met his waist and glided to his stomach. “C-Casey!” He stammered, his heart rate quickening. “This is inappropriate!---”
“Shhh…” Casey whispered, pressing his forehead into the crook of Donnie’s neck. “You always work so hard, Dee. Just relax for a moment.” He moved his hands down almost below the terrapins slender hips, and gave him a gentle squeeze.
Donnie let out a slightly aggravated sigh. “Jones, I-I don’t have time to relax! I have to finish this—” A small gasp escaped his throat as the human's rough fingers grazed his thighs. “I-” He felt a moan build in the back of his throat as Casey’s lips and tongue met his neck and shoulders. He felt himself melt into the boy's muscular arms as his hands traveled to the sensitive skin of his inner thighs.
“Seriously Donnie.” Casey murmured against the turtle's skin. “The Kraang tech isn’t going anywhere. But you? You’re wound tighter than one of your clockwork gadgets.”
Donnie’s breath hitched, his hands still lingering over the half-dissassembled console. “It’s— it’s a matter of efficiency, Casey! If I don’t recalibrate the—ah—the thermal sensors, the whole system could—”
“The whole system is fine.” Casey interrupted, his fingers tracing a slow, deliberate path back up Donnie’s ribs. He could feel the vibration of a low purr starting deep in the turtle’s chest, a sound Donnie was clearly trying to suppress. “Please, Don. Let’s take a break and… have some fun.” His voice took on a slightly sensual tone, and he lightly bit down on the turtle’s neck, making him whimper. “It’s Valentine’s Day, you shouldn’t be working on a holiday.”
“Fine.” Donnie said, his voice barely above a whisper. He gently dropped his head against Casey’s shoulder as the human found a particularly sensitive spot on his shoulder. “Ten minutes. That’s all you get.”
A small smirk pulled at the corners of Casey’s mouth. “Ten minutes is all I need.”