Title: The Workout
By: nancy
Pairing: Mac/Danny
Rating: NC-17
A/N: written for the 30_Lemons Challenge #19: The Gymnasium
Summary: Mac surprises Danny during a workout.

It was midnight on a Friday, which pretty much guaranteed that Danny would have the lab gym to himself. He worked out hard, losing his frustration in rep after rep on the nautilus and free weights, working his body for as long as he possibly could. It didn’t take long before he was sweating enough that his t-shirt was soaked with it, but Danny enjoyed sweating if he wasn’t in a dress shirt and tie.

He spent a lot of time with the punching bag, imagining the face of every perv and perp he’d ever arrested on the front of it. His fists were aching by the time he finished, which was the only reason he stopped. He had to work the next day and couldn’t afford to hurt himself enough that he had to call in. If he did and Mac found out, his ass would be grass.

Stretching through his cool down, Danny relished the burn of his muscles. At the end of it, he arched back just for the hell of it, then pushed off with his feet to flip over altogether. Smirking to himself, he muttered, “Who says you can’t stay flexible when you get old?”

An arm latched around his throat from behind and another did the same around his waist, holding him fast. His feet were swept out from under him and he landed hard on the mat, his attacker pinning him there.

“Flexible, but inattentive,” Mac admonished.

Relaxing at the other man’s voice, Danny retorted, “Shouldn’t need to keep an eye out here, Mac.”

Mac pushed a knee between Danny’s legs and countered, “You should always pay attention, Danny. Never know when some unscrupulous pervert will take advantage of your distraction.”

Danny froze when he thought he felt Mac’s cock hard against his ass. Couldn’t be. Had to be something else. “Um, yeah, I guess that’s so.”

“You know what I was thinking, watching you from the shadows?”

The low-voiced confession sent a shiver of arousal through him. “You were, you were watchin’ me?”

“I was,” Mac confirmed. “And I was thinking that you need to relax, Danny.”

“Well this ain’t going to do that, Mac,” Danny told him, breathless.

Mac rubbed against his ass and oh yeah, that was definitely a hard cock sliding up and down his crack. Shuddering in sudden need, Danny moaned, his head dropping against the mat.

“Oh I think it will.”

Without warning, Mac flipped him over, then pinned him again, crotch to crotch. Staring up at his boss in shock, Danny couldn’t think of a single thing to say as the other man started rocking hard against him. It was so wrong, the two of them grinding off in the middle of the gym floor where anyone could find them. Mac was still dressed in his suit, though it was devilishly rumpled with his tie askew and he just stared at Danny, those blue eyes intense and locked with his own.

Helpless, Danny’s head fell back and he thrust up against Mac, his cock throbbing and his breath harsh in his ears. There was more going on there than just two guys getting off, but Danny was too overwhelmed to figure it out. Mac ground down against him, hard and strong. Danny’s body tightened and it was only moments before he jerked and gasped, coming in his sweatpants, shaking with the intensity of his orgasm.

Mac pulled off to unzip his pants, pulling out an engorged cock as he crawled up Danny’s body. He stopped moving when his cock was in front of Danny’s face, his meaning clear. Hesitating, Danny stared at the leaking shaft for a long moment before taking it into his mouth and sucking on it.

Groaning loudly, Mac thrust down against the suction and Danny barely had enough time to catch a breath here and there as the other man fucked his throat. Short, harsh curses escaped Mac, “...fuck...that’s it...take it...fucking good...Christ...fuck...” as he humped rapidly into Danny.

It didn’t take all that long before Mac came and Danny didn’t have a choice about swallowing his come when the cock stayed lodged in his throat. When Mac pulled out a few seconds later and rolled to the side, Danny coughed and panted for air. His throat worked convulsively, still feeling the thick cock pushed almost all the way down into it.

Exhaling loudly, Mac got to his feet and made himself presentable. Giving Danny a crooked smile, he observed, “Now you look relaxed.”

Danny huffed in dark amusement and answered, “That’s one word for it.”

Mac held down a hand and, after eyeing it a moment, Danny took it and let Mac pull him upright.

“Why don’t you take a shower and we’ll get something to eat? You need some calories after a workout like that.”

Glad this wasn’t going to change anything, despite the innuendo, Danny nodded and said, “Sounds good. Give me ten.”

“I’ll wait at the elevator,” Mac replied, heading out.

Danny stared after him, then shrugged and hit the showers.