A/NThanks to those who reviewed my last couple-much appreciated! Sorry if this one has some mistakes but it's late. Let me know what you think, I've put less MD stuff in it and more of a story, but im happy to change back if you want. Enjoy.

The morning after their BBQ they were running very late for work after getting distracted by each other in the kitchen. He was not able to resist her as she totted around in her underwear and his day-old shirt.

"Derek. Stop it!" she purred at him, as he began following her onto the bench where he had perched her. "No. Down. We are already running late" she said, trying to make it sound as if she meant it.

"Fine" he stated with a disappointed look, "Can we stay at your house tonight though? It's closer so their wont be any problems if I feel like some exercise in the morning"

She grinned at his choice of words, "try going for a run if you are so keen to exercise in the morning" she retaliated with a mischievous grin, before jumping into the bathroom and locking the door so he couldn't respond. She had just gotten the door closed when the dishcloth he had been cleaning up with hit it.

When they finally arrived at the hospital, Meredith had managed to half dress herself in the car as Derek drove-much to his amusement; he dropped her off at the back of the emergency departments' car park so that no one would see them entering together. As she ran through the automatic doors and through the sea of waiting people she nearly ran into a little boy who was sitting on the floor. After pulling herself together, she turned to apologize, expecting to see two very angry parents. Instead she found him carefully putting her things back into the bag she had dropped.

"Hi" he said, looking up at her with green eyes

"Hey there, sorry about that" she said, still looking for his parents. "Thanks" she continued as he handed her bag.

"That's ok" he replied "Do you work here?" he questioned her

"Yeh, a few floors up though. I'm a surgical inter" she offered, not really expecting him to understand what it was as she had now determined him to be about seven or eight.

"Awesome!" he stated with a look of absolute awe on his face-I want to be a doctor when I grow up-but I want to work with kids"

She smiled at him, "Hey where are your parents?" she was getting a little suspicious that no one had come up to her to claim him yet.

"Oh, they aren't here"

"Are you here alone?"

"Yeh" he stated "but its ok" he added after seeing the worried look on her face "I've been in here before, I know what to do"

"Are you hurt?" she was getting worried now

"I've got a sore tummy"

"OK. Um, what's your name? I'm Meredith" She offered as she bent down to his eye level

"Derek Munroe" he stated proudly

"Well Derek Munroe, how about we get you inside" she said taking his hand and leading him past the rest of the queue and through the internal doors. Once inside she took him to the nurses' station and lifted him up onto the desk. "Hi. How you going?" She directed at the nurse standing at the desk.

"Hi" the nurse said, looking questioningly at Meredith.

"This here" indicating Derek "is Derek Munroe and he has a sore stomach"

"Derek I'm just going over here to speak to-Sally" she said to him, looking at the nurses name badge "Can you sit here for me" He nodded in response, looking shyly at Sally as Meredith indicated for the older woman to step aside.

"Hi, sorry about this but I nearly ran over him in the waiting area and he is all alone, I couldn't leave him there-I work up stairs and am running really late"

Sally looked at Meredith concerned "that's fine, leave him here with me, ill look after him" She said, as they walked back over the nurses station. "Hi Derek, do you want to come with me and we'll go see what's wrong with your tummy?" He looked between her and Meredith and slowly nodded his head looking concerned.

Seeing his anxiety Meredith wrote down her pager number and gave it to him, telling him if he gets scared he can get Sally to ring her on this number and she will come and see him straight away. With that he looked much happier and so she helped him down from the desk and he held Sally's hand and walked away with her. Meredith smiled at him, and then hurriedly spun around and hurtled towards the lift-Bailey was going to kill her!

Meanwhile upstairs the rest of the interns had completed their rounds-minus Meredith and Bailey was considering what form of punishment to give her, none of her interns had been this late before! Izzie, Christina and George where getting worried that she hadn't arrived yet especially when they saw Derek talking to Bailey-they had assumed she was with him.

"Right where is she?" Bailey said as she strode up to Derek and hit him on the arm with the chart she was carrying.

"Ouch" he said rubbing his arm "Who?"

"Who do you think? Meredith! And don't tell me you haven't seen her-I know you to weren't having an innocent chat in the call room the other day!" she said, hoping her evil-eye worked on surgeons as well as it worked on interns.

He started to say he didn't know what she was talking about, but realizing the time he said seriously "I have no idea" now he was starting to get worried "I dropped her off ages ago" Just then Meredith catapulted herself through the doors.

"I can explain" she said, doubling over in front of a stern looking Bailey and a bewildered Derek, trying to catch her breath.

"This better be good" Bailey stated, crossing her arms and tapping her foot.

"I tripped over Derek on my way in"

"That's what you are calling it now, ey, tripping over someone" Bailey said looking horrified that Meredith had tried to use this as an excuse.

Meredith straightened up looking confused "Not him" she said, indicating Dr Derek, who was now standing between them with an amused look on his face, waiting to see what Meredith's excuse was.

"I tripped over a boy called Derek on my way in" she stated "He was only little and his parents had just left him their alone, so I took him to the nurses station and made sure he was ok" she finished, looking at Bailey trying to monitor her reaction.

"Ok, hurry up then-we aren't standing around here all day" She said sharply looking at Meredith. She wasn't sure whether to believe her story or not, but she couldn't prove her wrong otherwise. "Now Grey, get moving you are with Burke today, he should be on his way to OR 2" With that Meredith grabbed her bag and hustled into the locker room to get changed. "Don't you have work to do McDreamy" Bailey snorted as she turned to yell at George, Izzie and Christina who had been waiting to see what happened to Meredith.

Meredith later found herself scrubbing in on Burke's open heart surgery, after consulting with him all day. After four hours in surgery she was starving and heading to the cafeteria as she checked her pager. She went through the menial messages that where there, it usually took nurses a few calls before they realized you where in a surgery, but her heart sank when she noticed one calling her to the emergency department. Hurriedly she launched herself at the stairs and ran down them. Once in Emergency she searched for Derek or Sally, guessing they had been the ones to page her, when she felt something grab onto her legs.

"Hey there, little man" she said, turning to see it was Derek who had attached himself to her legs as a nurse trailed after him.

"You said you would come straight away and you didn't" he cried as Meredith scooped him up in her arms.

"I'm sorry, I didn't here your message" she said "I'm here now, how are you feeling?"

"Not good" he replied as she wiped away his tears with her lab coat "Sally has gone home and Annie said I have to have an ulta"

Meredith looked confused "an ultra-sound?" she questioned the nurse, who was obviously Annie.

After talking with Nurse Annie, Meredith offered to take Derek back up-stairs with her and do the ultra-sound there, as Derek was now refusing to let go of her.

When they reached the lift Meredith picked up Derek so he could press the button. On the next floor up, the lift stopped and the doors opened to a very confused looking Dr Derek. As he stepped inside, Meredith explained and then introduced the two Derek's. "Derek, I'd like you to say hello to my very special fried Dr. Derek" as the boy smiled, happy to have Meredith back.

"I think this is going to get confusing" said Dr. Derek, as he bent down a little so he could talk to the little boy sitting on Meredith's hip "How about I call you Junior and you call me Doc, then we will no who we are talking about"

"Ok" the boy grinned, hugging Meredith tighter.

"Hey, do you think it would be alright if Dr Derek came with us to your ultra-sound" Meredith asked junior Derek.

He nodded his response.

Meredith then quickly explained what was happening to Dr Derek and handed him the boys file.

After clearing it with Bailey the three of them headed towards a private room. On their way they bumped into Izzie, who after taking one look at the boys eyes squealed "When did you two have kids?"

Meredith and Derek just stood there looking shocked "What!" they both stammered.

"Check out his eye's" Izzie motioned "You sure he isn't yours" Izzie joked as Meredith noticed the similarities between Dr Derek's eyes and Derek Juniors.

"Wow, that is a bit freaky, especially with the whole same name thing as well!" she commented.

After the ultra-sound had been completed and it had been determined that Derek Junior had a stomach ulcer and needed to be admitted, Dr Derek had to get to a meeting, so Meredith was left to look after Junior Derek by herself. She sat with him when with one of the social-workers trying to figure out who he was and how to contact his parents. The social worker informed Meredith that if his parents did not turn up by the next morning then he would be taken to a group home.

Seeing the young boy start to yawn she found him a private room so he could have a sleep-it had been a very big day for him and it was getting late. Meredith sat with him until he fell asleep then went to the nearby nurses' station to finish some charts off that Bailey had told her to do if she had time. As it neared dawn, she found that she had completed all hers and the other interns' charts as she had not wanted to stray to far from Derek's room. She tiredly crept into Junior Derek's room to find him sitting up awake.

"Aww, can't you sleep sweetie? Meredith whispered to the boy.

"Can you come lay next to me, I don't have my teddy to cuddle" the boy frowned

"Sure" said Meredith as she lay down on top of the sheets and he wrapped his arm around her hand, falling asleep quickly.

Dr. Derek had been looking for Meredith for quite some time; he had just come out of the surgery that had called him out of his earlier meeting and by now he was looking forward to going back her place and crashing. After checking all the on-call rooms, remembering their last encounter in the surgeon's room with a faint smile, he checked the locker room before questioning George and Izzie who were on their way home. Finally he found her curled up asleep balancing on the edge of Junior Derek's bed.

He was about to step inside the room as she stirred, and he had to dash forward and catch her before she landed on the floor.

"Hey" he smiled, as he helped her back into a sitting position, he could see she was completely disorientated as to where she was.

"Morning" she grinned having remembered why she was there. "It's amazing how much space they can take up" Motioning towards Junior Derek who, although quite small, was sprawled across the bed, lightly snoring.

"He still had his hand in yours when I came in" Derek replied, running his hands through Meredith's bed hair.

"Are you going home?" she whispered

"I was headed that way. Are you"

"No I'm going to stay until he wakes up, if his parents don't show up soon he will be going to a group home tonight"

'Poor little thing" Derek sighed as he watched the child sleep. "I might stay as well, at least then there will be two people for him to wake up to"

Meredith smiled, she knew he was staying as much for her as he was for Junior Derek's.

"On one condition" he said sitting down in the visitor's chair "You come and sit with me, not him"

"I don't think I'd fit with him any more" she said looking at Junior Derek as he rolled over, taking up the space where she had been lying.

Meredith moved over and sat on Derek's knee and he pulled her back to lye against him "What if someone comes in?" She questioned him, sitting up with a jolt.

"Rounds won't be for another three hours and the nurses know you are in here so they won't come in to check on him. So, I'm guessing that we are safe at least for the next few hours"

Meredith didn't need anymore reasoning, after kissing him she regained her position against his chest and snuggled up to his neck as he wrapped his arms around her. "Ok, but don't let me go to sleep"

When Meredith woke up she could sense it was light and she could hear the faint rumblings of a TV. She turned her head, very lightly kissing her sound asleep cushion on the neck as not to wake him. As she carefully tried to get off Derek she looked up and saw Junior Derek sitting up in bed, hands behind his head and grinning at her.

"Is he your boyfriend" he asked his grin widening

Meredith jumped off Derek. They had been caught!

Derek woke with a start as Meredith lept off him, but started to laugh when he saw the young boys face. "Morning Junior! How are ya feeling?" he asked, straightening in the chair.

But the boy only started to sing "Merri and Doc sitting in a tree, K.I.S.S.I.S.G"

Meredith and Derek shared a quick glance before she launched a tickle attack on the boy as a way to try and distract him from his song, which seemed to be getting louder with every line.

Derek, Meredith and Junior were laughing so hard they didn't hear the commotion in the hall and where therefore very surprised when an elderly lady came bursting through the door, quickly followed by a nurse.

"Derek" she cried out as Meredith stopped tickling the boy and looked up with shock.

"Grandma" the boy yelled enthusiastically jumping off the bed and into his arms, while she bent down and scooped him up.

After the commotion died down the grandmother launched into an explanation as to why he was here alone. It turned out that she had custody of him as his parents were drug addicts, who had obviously dropped him off at the hospital when he complained of feeling sick while on a day trip with them. It turned out that he had been into hospital quite a lot as she already knew he had a stomach ulcer.

"He got it about the same time he started to live with me" she explained "he thought his parents were not going to be ok and we later discovered he had taken to caring for them when they where high." She said, shaking her head. "They must not have given him his medication and that's why he started to feel sick again."

The grandmother wasn't the least surprised when Meredith explained what had happened during the day. She explained that Meredith looked a lot like his older sister who was planning to come and take care of him full time when she finished school.

"He wants to be a doctor, you know"

"We heard" Meredith laughed adding "I should be an attending by then so maybe you can be my intern"

Derek Junior got out of his grandmothers arms and went and gave Meredith a big hug before giving Derek one as well. Meredith carried him out to the waiting area and told him to come back and visit her soon so they can have a proper look around the hospital together. When the boy and his grandmother where walking towards the car Meredith and Derek froze as they heard the boy singing "Merri and Doc sitting in a tree, K.I.S.S.I.S.G"

The nurse shot Meredith and Derek a questionable look and he slightly took a step back from where he had been standing just behind her. They where very relieved to hear the lady just laugh and state to the nurse that he thinks everyone was everyone else girlfriend or boyfriend. Not that they minded everyone knowing they where back together, as news travels fast within the hospital, but both preferred to keep it a secret for as long as they could.

"Bed!" Ordered Derek as when Meredith started to head for the kitchen when they finally got home.

"Derek, I'm really not tied" she protested as she tried to duck around his arms. "Thanks to my cushion I had quite a good sleep last night" she said smiling as he lent down to kiss her.

"I know you did" he stated when they finally broke apart "but after all that lying about I need some exercise" he grinned

"I'm glad I'm going to work then" Izzie said, coming down the stairs, closely followed by George.

Meredith just smiled before slipping her hand into Derek's and running up the stairs.

Ok so let me know what you thought. I put more of a story into this one as the last two where just Meredith and Derek doing what Meredith and Derek do.