Disclaimer: Neither of us own Back to the Future.

Author's Note: This story takes place in 1985, and involves Calvin McFly - as he's celebrating his first Christmas without the younger version of his twin. This was written by bttf4444.

December 25, 1985
6:00 AM PST

Calvin William McFly sighed, as he glanced at his clock on the wall. This was quite his first Christmas of not having his twin, Martin Seamus McFly, around. Technically, his twin was still around - but he now merely existed in the form of a century older Clint Calvin Eastwood. For some reason, this just did not feel quite the same to him.

Granted, he always was quite fond of Dr. Eastwood - even long before find out about his true identity. However, it was hard for him to accept that the centenarian was the same person as his twin brother. Indeed, this was a bittersweet occasion for him.

"Are you awake, Cal?" asked Benjamin Louis Brown. Calvin simply smiled, as he turned towards his best friend - who, curiously enough, has actually turned out to also be his great-grandnephew. "It's Christmas Day. I do think we should be getting up, now."

"Benjy really is right," agreed Scott Clint Eastwood, who also happened to be Calvin's great-grandnephew. "We are at Dr. Brown's mansion, which rather used to belong to Dr. Von Braun. I must say, it sure still seems strange to think that... that they're the same person. I suppose that would explain just why they're so much alike, though."

"I'm not sure if I'll ever get used to the idea," Calvin replied, sighing. He sat up in bed, as he added, "Well, I suppose we should head to the living room. It's so weird to think that I... that I have so many relatives. Relatives that I just didn't even realize I had."

"It's the same with me," replied Scott, nodding. "I wonder if Harmony's up, yet. I sure do love her, and it's simply so weird to think of how we're dating. Once we're married, then... I guess this means the Doc/Marty lineage would be completely tied together."

"Most likely," Calvin replied, softly, "I'll end up marrying Suzy Parker. I do wonder just what our children will be like." He stretched, as he added, "I guess I shouldn't be in a hurry to really grow up, though. Even though, uh, Dr. Eastwood sure has always been a cheerful person... Well, he does get very wistful - whenever he discusses..."

"It's great that he does remember being your twin," Benjy commented, gently, "even if they are quite... distant." He glanced at the clock, as he added, "I really think we'd better be heading downstairs. The others are probably waiting for us, and we..."

"That's a good idea," agreed Calvin, as he stepped out of bed. He began to feel quite nostalgic, as he added, "It is hard to believe that my twin is now an early riser. I used to have difficulty with getting him to wake up. I guess he has more stamina, now."

Just as the three boys left the guest room, they saw Harmony Brown and Susy Parker approaching them. Indeed, it sure seemed strange to think of how Scott and Harmony were dating - when Benjy was a mutual cousin of theirs. However, he really felt that it was wrong to judge - and, in the end, he simply wished for his friends to be happy.

"Exciting day, eh?" Suzy asked, smiling. "So, Cal, you must be feeling the same was as me. I sure still remember how our parents reacted to the news. Mom just couldn't stop crying, and even Dad shed a few tears - which is a bit unusual for him. Even today..."

"I think even my parents still have a hard time adjusting," Calvin replied, sighing, "even though they rather learned everything on the day that Marty and I were born. For some time, Mom couldn't even talk to Dr. Eastwood without getting teary-eyed."

"Yeah, I guess it's just as hard for our parents to deal with," Suzy suggested, softly. "At least, your parents did know about it in advance. Well, our twins are here - even if they are a century older - and our parents will also be coming. I do think we should try to be happy. I mean, it's Christmas - and it should be a very joyful time of year."

"Suzy is right," added Harmony, as the teens began to walk downstairs. "At least, we really have the privilege of knowing that Marty and Jennifer aren't really gone. So, all things considered, we should look on the bright side. Mm, it smells like coffee cake."

"Mom said that she'd be bringing fruit soup along, as well," Calvin explained. "It tastes quite delicious, but that stuff can be very filling. I suppose we just could have that for dinner, as the coffee cake also smells good. Clara is a very good baker, if I say so."

"Yeah, I love baking with Grandma," Harmony agreed, smiling. "I ordinarily don't even like prunes or tapioca - although I do like dried peaches - but I do absolutely love fruit soup." She sniffed a little, before adding, "I smell bacon cooking, as well. I quite hope we have breakfast, soon. It beats cold cereal, any day - even the sugared stuff."

"Good morning, kids!" Dr. Brown greeted, as he stepped into the kitchen. "I hope you all had a good rest, last night. Once Suzy's parents get here, we can have breakfast. We have the rest of the extended family here. I even pulled all the tables together."

"Oh, good!" Calvin breathed, with relief. "I was hoping we could have an actual family meal together. Perhaps, Suzy and I could even... sit with our centuries older twins."

"Merry Christmas, children," called out Dr. Eastwood, as he entered the room. He was followed by his wife, who was now named Claudia. "It's sure nice to see that you're all up bright and early. I hope you all had a good rest! It'll be one interesting Christmas!"

"Indeed, it sure will," Calvin agreed, as he went to hug the centenarian who was once his twin. He saw that Suzy did the same, with Claudia. "I'm simply so glad that you are still here, even if we can't do all the things that we used to do. You are still Marty!"

"Yeah, I still really remember the April Fool's pranks that we would pull," Dr. Eastwood replied, smiling. "And I do remember the times that we dressed up alike, and we really were inseparable. I also remember just how surprised I was, when you started dating Suzy. I think my wife was just as surprised, but there's really nothing wrong with it."

"I do remember that," Claudia confirmed. "Well, we heard you saying that you wanted to sit with us - but why don't we sit across from each other, instead. I mean, Suzy can sit across from me - while Cal can sit across from my hubby. That sound like a plan?"

"Yeah, I think that'll work," Calvin replied, smiling. "I'm glad you guys really don't have a problem with Suzy and me dating. I still quite remember feeling a little jealous, when you and Jenn first stated to date. I then realized that Suzy must've felt the same."

"I did," confirmed Suzy, "and Cal and I quickly became good friends. I never expected that we would fall in love, though. After all, how often does it rather happen that two pairs of twins fall in love with each other? Since the event, I wonder what our children are gonna be like. More than likely, we'll end up with a son who looks just like Calvin."

"One thing is certain," added Harmony. "If you two hadn't been stuck a century in the past, that Scott wouldn't even exist. Man, I can't quite imagine life without him! Hell, I also would probably not exist. Man, this very thought really gives me the shudders."

"Well, we quite have one complex family tree," Benjy pointed out. "If we ever have to do a family tree for school, I would simply have to leave out so much stuff - since I am quite certain that our teacher would not believe us about the... the time travel stuff."

"And, if he did," Scott added, "it could be quite dangerous. I do remember hearing the stories about the various worlds where a Tannen became rich and corrupt. That's why Dr. Brown and Great-Grandpa rather won't let us go on any time travel trips. After all, they've seen how messy and risky time travel could be - and it just would be very..."

"Well, think of how many lives are at stake," Clint pointed out, softly, "and I'm not just referring to the obvious. As the culture of this timeline is radically different, I really am certain that many people have made different life choices. Do you get what I mean?"

"I'm a little surprised that Eric Clapton exists," added Claudia. "After all, his father was a Canadian soldier during the second world war - in the original timeline. I'm not such a fan of his music - but, without him, Led Zeppelin sure would probably have never been formed. He was the original guitarist for The Yardbirds, before Jimmy Page joined..."

"Well, it's really like what Grandpa often says," replied Harmony. "One event causes a chain reaction, which can lead..." Just then, Robert and Josie Parker stepped into the kitchen. "Merry Christmas, Mr. and Mrs. Parker! It's just so great to see you here!"

"Well, it's great to be here," Josie replied, as she threw her arms around Claudia. "I'm still not very sure if I'll ever get used to you being older than me - or, for that matter, even older than my grandparents - but I'm most certainly glad that you're still alive."

"I'm sure still amazed to discover that I have more family than I thought I did," added Robert. "Not only that, but our Suzy has been dating Calvin for nearly two years - so it looks as if both of our children will be married into the McFly family. Still, I can't help but get sad - whenever I think about... And, the thing is, I almost never cry."

"I am certain Jenn and Marty had it even harder than us, though," Suzy pointed out, softly. "After all, they simply had to adjust to a different time period - and they were separated from everyone that they loved. Well, except for each other - but they..."

"All right, folks," Dr. Brown called out, clearing his throat. "Since we have the entirety of the McFly/Brown/Parker family here, I think we should now simply get some food in our stomachs. I must say, I would never exchange this super-family for the world."

Calvin, along with everyone else, cheered - as they headed towards the dining room. Even though this year did bring a couple of losses, he also gained a lot more. He then realized what a lucky boy he really was. A smile spread across his face, as he realized that he was a proud member of a unique family. Indeed, it would be a joyous day.