A/N : Aww. Meredith. Why does she have to walk in everytime? lol. Not that I mind...this is by Sarah (My Kind of Rain) from The Incision!

"Damn it" Addison remarked. She tried to bend sideways, but move her lower body as little as possible as her skirt had gotten caught on the corner of a medicine cabinet in the hallway. This exclamation, while soft, had been enough to capture the attention of her husband who was just leaving a patients rooms 3 doors away.
Bending sideways and down, Addison managed to give her husband a perfect view of her rear, one of his favorite parts of her anatomy. Well, he had to admit he had yet to find a place on her body he didn't love, but her rear was definitly near the top of his list.
As Addison tried to wiggle her skirt loose, she also unwittingly ended up wiggling her rear right as her husband as he grew more turned on by the second. Derek checked his watch, he wasn't expected in surgery for a little while, enough time at least to get done what he had planned. Twice if he really pushed it. Placing the patients chart he was holding on the proper rack, Derek made quick strides to where his wife was busily trying to unhook herself.
Finally managing to pull herself free, Addison stood up, only to suddenly find herself being dragged sideways into a supply closet. Addison practically knocked Derek over as she stumbled into the room and he slammed the door behind them.
"What are you doing?" Addison practically squaked as Derek pressed her up against the door, mostly to keep any wandering janitors out. Then Derek looked up at her.
"Oh," was all Addison managed to say. The lust the burned in his eyes was more than enough to tell her what he was doing. Derek attacked her mouth, his sexual desires and tension from dealing with patients blending into a powerful emotion that he had lost all control over. All he knew was that he wanted, no needed, his wife right here, right now.
Addison had no idea what had caused the sudden burst of lust in her husband, but she welcomed it with open arms, or as the case was here, open legs. Derek pulled Addison up against him, pushing he backwards into the door, never once breaking the kiss. Addison lifted one leg, wrapping it around him, then another as he lifted her up and grabbed hold of her thighs, squeezing and massaging them as they wrapped around him.
Derek continued to ravage her mouth, and he un-tucked and unzipped her clothing.
"Have I ever told you how must I love it that you always wear skirts?" Derek breathed on to her neck and he began to place kissed down her collar bone and chest.
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Bailey and her interns began filing out from a patients room.
"I swear, Derek was just here," Meredith said. She had just given him updates on the blood work from the patient.
"Where has that man wandered off to?" Bailey muttered to Meredith, as they started to walk down the hall. At that moment, about 40 feet ahead of them, a supply closet door slowly creeped open. From the room they saw a manolo blahnik shoe slowly emaged, followed by a hobbling Addison as she tried to walk and put her other shoe on at the same time. Her hair was visibly tousled, her lipstick practically gone, and three buttons were visibly out of place. Then from the shadows of the supply closet came a hand that quickly came out, lightly spanking Addison's behind. Followed by Derek Shepherd as he tied the scrubs of his pants. They turned to each other, straightening the other's appearance, Derek buttoning Addison's shirt, Addison fixing Derek's hair.
As soon as they deemed each other 'decent,' they turned together to start walking back down the hall only to stop dead as they realized they were being watched by Bailey, Meredith and all the other interns.
"Looks like we found him Grey" Bailey muttered as a small grin began to spread on Derek's lips, which still bore remanents of his wifes lipstick.