"Fuck, fuck, FUCK!" Don Flack glanced up from his paper in time to see Danny stride into the break room and throw a folder of results down onto the counter. Danny walked over to the machine and grabbed a mug; he upended the pot over the mug before realising it was empty.
"Oh for the LOVE of-" he stopped sighed shakily and shot out a hand to Flack's half finished cup, swigged another half of what was left away and shoved it back at him. Danny flopped down into a chair with another exclamation of "Fuck!".
"Uh, Messer, you okay?" Flack asked uncertainly, Danny had pressed both hands to his face but now spread his fingers apart, away from his eyes to glare at thin air.
"NO! Fuck it, this case is so FUCKED! All the fucking evidence points to all different fucking people and all the fucking people have air tight fucking alibis!" Flack smirked, raised one eyebrow and took an almost dainty sip of coffee before calmly remarking.
"Y'know Messer, if you say 'fuck' one more time I'm gonna throw you forward over the counter, might take your mind off this, ahem, case," Danny dropped his hands and glared at Don.
"Har, har de fucking har," he snapped. Flack carefully placed down his coffee and strode over to the chair the CSI was sitting in, he pushed him back against the back of it and mashed his mouth against his. He parted Danny's lips with his tongue and rolled it over Danny's parted lips, his teeth and his tongue. Danny's hands clawed tightly against the arms of the chair as Flack ran one hand down Danny's throat and played at the collar of his shirt, then he pulled back and walked back to his coffee.
"I ain't gonna warn you again Messer,"
"Fla-ack, calm me down some more and stop teasing me, this case is fu-" he paused at Flack's raised eyebrow, coffee halfway to his mouth.
"This case is horrible and it's stressin' me out," he almost whinged. Flack downed his coffee, stuck the mug in the sink, he strolled from the break room, calling over his shoulder.
"Instruct your sewer mouth to behave and maybe later," Danny narrowed his eyes and stuck his tongue out at the homicide detective's retreating back.
All day Danny specifically forced himself not to swear, Lindsey and Stella gave him the strangest of looks for his out of character substitutes and everytime Flack passed through the lab he gritted his teeth and drew a halo around his head.
As he was leaving that evening, fumbling with his car keys, he felt a long, strong arm slide around his middle and warm breathing on his neck and ear.
"That's my good baby, my place?" Danny nodded wordlessly as Flack led him to his car.