The Quiet Game- I took this idea from a prompt on otpprompts on tumbler. Here's the prompt: "Imagine Person A suggests playing a game where whoever stays quiet the most, wins. Person B is very competitive and wants to win. But then Person A, who wants to win more, starts kissing Person B's neck, ears, etc. They start having sex and Person B can't be quiet." (Extreme smut warning!)

Greg closed the blinds to the office, and then locked the door. Morgan watched him, studying his strange behavior, as she shuffled some files around her desk.

"What are you doing?" she asked. Greg whipped around and shushed her, holding a finger to his lips.

"I'm hiding from Hodges. Don't ask. It's a long story. I don't want him to know I'm in here so be quiet."

Morgan scoffed, offended. "Are you seriously telling me to be quiet when you can't ever shut up whenever we are working a case?"

"What's that suppose to mean?" Greg whispered angrily.

"It's means you have a story for everything. An anecdote about fears or fetishes or a lengthy tale from Nana Olaf. Not that I don't enjoy hearing them, but if you're going to chastise anybody for not being quiet, it should be yourself."

"Whatever Morgan. I can be quiet a whole lot longer than you could if I had to be. I mean you are the woman with an opinion or advice for everything."

Morgan slammed the files in her hand on the desk. Greg grimaced at the sound, glancing towards the door to make sure no one heard. When he looked back in Morgan's direction, he was startled to find her standing right in front of him, arms crossed and glaring.

"Is that a challenge, Greg Sanders?" she demanded to know. He stood from his chair, eyeing her back.

"Yeah, it is. One that I'm going to win."

Morgan's angry expression turned sly, a smirk crossing her face. "Okay then, starting now, first one to talk or make a sound loses. Loser buys breakfast." She held out her hand and Greg shook it, returning the smirk.

Ten minutes in, Greg was becoming antsy. Every time he looked over in Morgan's direction, he ached to say something, but there was no way he was going to lose this battle. Yet another glance aimed her way, he spotted her crouched down at the filing cabinet, giving him a brilliant idea.

He snuck up behind her and felt her jump as he placed his hands on her sides. She twisted her head up, shooting him a dirty look as he began to tickle her. She bit her lip, determined to contain the laughter and pushed him away. Standing back from him, she balled her fists by her sides and glared at his arrogant grin. She shook her head and then smiled as a idea formed in her mind. Two could play this game.

She slowly walked over to him, a finger pressed against her full lips that hid a smirk. Greg folded his arms in front of him, knitting his brows in confusion. What was she doing?

She stood right in front of him now. So close, he could smell the mint on her breath. She leaned in, as if she were about to whisper, about to surrender. But she didn't. Instead, she took his ear lobe lightly between her teeth and teased it with her tongue. His mouth dropped open in shock. Greg closed his eyes and relaxed his stance as her lips made their way down his neck, puckering and gently sucking. He felt all the blood drain from his head down to the southern region of his body. His erection stiffened against the fabric of his boxers. He took a deep breath, trying to stop the groan fighting to escape him as he felt Morgan's fingers tease the skin above the hem of his jeans. Holy shit, could she play dirty!

Not that he couldn't play just as dirty. While she nibbled on his neck, his hands ventured up the back of her blouse. He felt her tense as he unclasped her bra and grazed his hands along the edge of her breasts. She pulled back to stare at him. She desperately wanted to speak now. To ask him what they were doing and if they should. But in all honesty, she didn't know if she really wanted to hear the answer. So she decided to just forge ahead, grasping at the snap on Greg's jeans as she unbuttoned it and zipped the zipper down, causing them to fall to the floor. His boxers followed next. Greg gasped, the sound too faint to stop the game, as she cupped him and then ran her fingers along him. Her eyes locked onto his and he leaned down to kiss her, hungry and desperate for more. She gently pressed both her hands on his chest, pushing him backwards into the plush office chair behind him.

She climbed on top on him, straddling him, as her shirt made it over her head and onto the floor, her bra soon joining it. She kissed Greg while his hands glided up her smooth ivory skin. His thumb caressed her nipple, and she broke the kiss, burying her head into his neck as she silently moaned against him, the vibration of the sound almost sending him over the edge. His hands gripped her shoulders, drawing her back, and he mouthed the word 'condom' to her. She frowned until Greg nodded towards his discarded jeans and mouthed the word 'wallet'.

Minutes later, Morgan had shed the rest of her clothes as she lowered herself onto Greg. The competition was now the furthest thing from either of their minds as she moved against him, eliciting a soft moan from him that increased in volume each time their hips went flush against each other.

"Oh God, Morgan," he sighed, trailing kisses along her collarbone as she rode him. Then he couldn't stand it any longer. He pulled Morgan against him, holding her tight as he shuddered, letting go.

She laid her head on his shoulder, and then tickled his neck with a whisper.

"You lose." She smiled, leaning back to gauge his reaction.

He laughed. "That's strange because I feel like I just won the jackpot." Morgan moved to kiss him when the rustling of the door handle turning stopped them cold.

"Greg? Are you in there?" A familiar lab tech's voice called from the other side. Quickly, they jumped up and scrambled to get dressed. Morgan ran her fingers through her hair, and both of them tried to appear causal when they heard the sound of a key turning in the lock.

The door swung open and Hodges and Ecklie stared at them from the doorway.

"What's going on in here?" the sheriff hedged, eyeing the two CSIs cautiously.

Morgan and Greg exchanged a brief glance. "We were just working on…an experiment," she answered. Greg looked down at the desk, biting back a smirk.

Hodges barged into the room. "Greg, I've been trying to get a hold of you all night. You're not answering your phone and-"

"Hey, look at that,"Greg said glancing at his phone now, "it's six o'clock. Shift's over. How about that breakfast?" He turned to Morgan, ignoring the incensed lab tech.

"I'd love to," Morgan answered, grabbing her purse. They shuffled past Ecklie and Hodges, who stood staring at them as they walked into the hall.

When they had walked a considerable distance away, Greg leaned down to Morgan and whispered, "So, how about after breakfast, we go back to my place and perform another experiment?"

Morgan grinned. "What kind of experiment?"

"I think this time we should attempt to see who can be the loudest." Greg took her hand in his as they walked out into the parking lot.