Title: Can't Believe
Author: slightly_frayed
Pairing: Nick/Greg
Rating: NC-17. PWP.
Spoilers: None.
Summary: It's pure smut, I assure you. I know there are lots of people who hate the two of them doing... things at the lab, and I apologize.

He can’t believe they’re doing this. Even when he loses all control and his moans echo harshly in the empty locker room, he still can’t believe it. Can’t believe those are Greg’s hands fumbling with his belt buckle. Can’t believe that that’s Greg’s mouth leaving selfish and needy impressions on his neck for all to see later on. Can’t believe they ducked into the locker room after a painfully long shift because they just couldn’t wait until they got home.

“Shhh…” One of the trembling hands is covering his mouth now, and he’s really quite grateful because he’s whimpering incomprehensibly and his breath is catching in his throat. Greg’s grinding against him now, and he never thought he’d actually want the younger man to take his pants down in the locker room at the lab, but it’s a painful priority at the moment.

He manages a pathetic please and nearly loses his mind at the sight of Greg’s mouth forming a smug grin and his skin flushing a guilty red. He’s torturing Nick now. Torturing him because he knows he can make Nick do anything. Say anything.

“Tell me what you want, Nicky. I want to hear you say it.” It’s a devilish grin now, accompanied by that glint in his eye that makes Nick lose all sense of reality.

“Please, Greg…” He hates begging; loves what it does to Greg. Forfeits. “C’mon, G, please… I need you to take me.” He knows that’s not what the younger man wants to hear, but he’s almost certain he can hear footsteps in the hallway…

But suddenly he’s surrounded by hot, wet heat and he doesn’t even care anymore. Couldn’t possibly form coherent sentences to warn Greg anyway, because he’s humming now, and the gentle vibrations are enough to send him over the edge. He bites his lip to stifle the moan as he empties himself into Greg’s mouth, trying far too hard to keep himself upright.

The footsteps are closer now, and somehow Greg manages to tuck Nick back in his pants and open his locker before Sara rounds the corner and smiles.

“You both headed home?” She asks, seemingly oblivious to the situation.

“Yeah. Need some sleep,” Greg somehow answers calmly and shoots Nick a quick glance.

“I’ll see you tomorrow, then.” She grabs her coat and leaves.

When Greg makes his way back over to Nick, he smirks again. “Tahoe. Now.”