Quick disclaimer, for those of you who don't believe that it would be possible for such a thing as what you're about to read happening practically right in front of oblivious folks. To that I say, wrong! *buzzer sounds* You have absolutely no idea how oblivious people can be to what's around them – it's how I've been able to sneak up on my friends and generally get away with the craziest shit; because people are, as a rule, unobservant. We're rather selfish creatures that way. But enough about that – on with the smut!

"Are you sure we have time for this?" Castle asked. "We are in the middle of a case…"

"We've had to reschedule your annual physical three times already, Castle. It's on the way to our destination and won't take too long. I planned it all out." Beckett insisted.

He continued to grumble, but allowed her to lead him into the waiting room. Twenty-five minutes later they sat in the waiting room, surreptitiously checking their watches every couple of minutes.

"How much longer do you think it will take?" Castle asked. This was like a stakeout, only without the fun of possibly nabbing a killer.

"I don't know, Castle." Beckett huffed. She glanced around the waiting room. They were in a corner facing the television mounted on the wall; one middle aged woman, an elderly gentleman, and a young man in his early to mid twenties were all on the other side of the waiting room. The woman was reading magazines, while the older man appeared to be napping. The twenty-something was bobbing his head, his eyes closed as he listened to music on his iPod.

Beckett nearly jumped when she felt Castle's hand slide up her thigh. She was wearing a skirt – a rare, momentous occasion – and his hand glided smoothly up bare skin before slipping underneath the cotton material. Beckett glanced quickly over at the three other occupants of the room, none of whom was paying the slightest attention. There wasn't even a nurse at the desk. And so, even though she knew that it was wrong and they would get kicked out at the very least, if not arrested, she let Castle's hand continue on its upward journey.

After a moment, his fingers brushed against her damp underwear. They slipped beneath the seam, stroking the skin of her inner thigh. Beckett did her best not to squirm. Castle's face was admirably blank, his eyes fixed on the Judge Judy episode showing on the television screen. No one could tell by looking at his face that his hand had just dipped underneath her panties, one finger stroking her bare flesh.

Trying to regulate her breathing, Beckett gripped the thin wooden arms of her chair, praying that no one else would enter the waiting room. She really shouldn't have been getting so worked up like this, so turned on by the idea of getting off on Castle's hand in the same room as three oblivious (and, for all she knew, perfectly nice and respectable) people, but she was. She was completely turned on, ridiculously so.

Beckett squeaked a few curses at Castle past her tightly clenched teeth. He blinked, fighting back a smirk. His hand found her clit and rolled it gently. Beckett bit her lip to keep from gasping. She sent Castle a glare that he ignored.

Then he inserted a finger in her, and Beckett nearly lost it. She was pretty sure that her face was alarmingly red. She turned her head to glare at Castle again, but then he slipped another finger in and her expression melted as she tried not to groan. Beckett was certain that she looked ridiculous – or rather, she would have looked ridiculous to anyone who looked at her face and not at her lap.

Castle curled the tips of his fingers just a little, hitting the perfect spot inside of her, and Beckett had to forcibly stop herself from bucking her hips. She bit her lip again, screwing her eyes shut. Castle's rhythm was steady, and he worked her with an assurance born out of months of practice, but his pace was far too slow for her liking. Not just because her body was screaming for release, but also because they were technically liable to get arrested for public indecency.

"Rick!" Beckett hissed. Her throat felt unusually tight from her inability to vocalize her feelings.

"Hmm?" Castle looked over at her for the first time since this madness began. His expression was one of mild curiosity. Beckett sent him her best glare. He beamed at her.

"You're so cute when you're mad." He said lightly.

Beckett tipped her head back helplessly as his fingers curled again. She gripped the arms of the chair harder. "Castle, please, just… someone's going to look up or enter the room or something any second!"

"Good point." Castle nodded. "Wouldn't want to leave you hanging."

If they were caught, her sexual frustration would be the least of their worries, but Beckett didn't bother to correct him; not when he was picking up speed and intensity. Beckett allowed her hips to rise slightly off the seat of the chair as her orgasm spilled over. She breathed slowly through it, trying to both hide what was happening to her body and enjoy the sensations as much as possible. The result must have looked hilarious to Castle, because he had the most ridiculous grin on his face.

Looking down at herself, Beckett was glad she wasn't wearing jeans. "Castle, fetch me that box of tissues." She said, her voice low.

Castle reached over to the small coffee table a few feet away and got the tissue box, taking one before handing the box to Beckett. He wiped off his hand while Beckett wiped off her thighs, then collected the dirty tissues and threw them away in the wastepaper basket.

No sooner had Beckett finished finger-combing her hair and rearranging herself then a nurse stepped through the door, clipboard in hand. "Mr. Castle?" The lady asked, looking around the waiting room.

Castle and Beckett both stood up, and Beckett was suddenly grateful they weren't there for her physical. "Try not to look too smug." She grumbled to him as they followed the nurse to the examination room.

As usual, he ignored her, that dopey grin staying plastered on his face for the rest of the day.

I wish my yearly check-ups went like this. As of right now they are so incredibly boring… Anyone got any waiting-room horror stories to share? Feel free to tell me when you leave your review! (Yes, I'm shameless. But I write smut, so you knew that already.)