Disclaimer: I do not own Back to the Future. I also don't own the Calvin Klein Universe, which belongs to EmmettMcFly55.

Author's Note: Calvin Klein, the former Marty McFly, celebrates a bittersweet birthday with his son and his younger self.

June 8, 1985
12:30 PM PDT

To the casual on-looker, Calvin Martin Klein Sr might appear to be your very average middle-aged man - albeit with pop cultural tastes that, perhaps, was somewhat more common of the current youth. His son, Calvin Martin Klein Jr, simply never objected - and neither did his friend, Martin Seamus McFly. In fact, they felt that it was "cool".

Calvin Sr smiled, as he pondered over how much his son resembled Marty. On several occasions, in fact, they were actually mistaken for identical twins. Their resemblances were of no coincidence, though - for, Calvin Klein Sr himself used to be Marty McFly.

With a wistful sigh, Calvin Sr glanced up at Calvin Jr and Marty - who were both sitting across from him. Marty was a day shy of turning seventeen, while Calvin Jr's sure was soon to follow. It seemed like almost yesterday, in fact, when both boys were babies.

That simply wasn't the only reason for why Calvin Sr felt so wistful - although, as with many parents, the idea that his son was close to adulthood was more than just a little disheartening to him. It was just the fact that he knew this would be Marty's last year in the present, though, that placed a bittersweet pang in this otherwise special day.

"What's wrong, Dad?" Calvin Jr asked, concerned. Marty nodded, as if he also shared the concern. "I know that Marty and I are almost seventeen, but it's not a... Well, it's not as if... We do have one year of high school left, and we... Please don't be sad."

"I'm sorry," Calvin Sr replied, softly. "I understand that you're still quite young, but... Well, I miss the days when you were... even younger." He, of course, simply couldn't explain the truth to the boys - which made things even harder for him. "I just feel..."

"It's not as if we plan to leave Hill Valley," Marty pointed out, flashing a lopsided smile. "We'll always be around. I promise." Marty's insistence, of course, made Calvin Sr feel even sadder. Through no fault of his own, he sure knew that Marty would not be able to keep his promise. "I'd like to thank you for taking us to Pizza Hut. It's a nice treat."

"Yes, thank you, Dad," Calvin Jr agreed, as he also flashed a lopsided smile. "So, why don't we just put some music on the jukebox? It could make you feel better. We could play a song by Huey Lewis and The News. How about The Heart of Rock and Roll?"

"That sounds real awesome, son," agreed Calvin Sr, as he gave his son's arm a gentle squeeze. He smiled quite fondly, as his son stood up. He thought of how great it was, that he and his son actually never had to fight over what music to put on the stereo.

"Thank you for everything," added Marty, smiling. "I simply hope that, within the next year... Well, I hope that our band will be able to make some public performances. The thing, it sure gets real discouraging... whenever judges reject our music. I know what you, Dad, and Doc are always saying. Still, it... I really want to become a rock star!"

"Hey, even Led Zeppelin has encountered a few rejections," pointed out Calvin Sr, as a lump formed in his throat. He certainly didn't want to give his younger self any false encouragement, of course. "The thing is, you cannot take rejections so personally."

"Yeah, I guess you're right," Marty replied, sighing. "Still, it just seems like we've been rejected about a hundred times - and, well, Strickland is always telling us that we sure don't have a chance. It just... I swear, it's like that man absolutely hates my guts!"

"Strickland sure is an asshole!" groused Calvin Jr, as he returned to the table. "I think he just hates everyone, though. I actually learned not to take what he says of me so personally, a very long time ago. As far as our band being rejected goes... There is a part of me, in fact, who wonders if Strickland might be behind all of our... rejections."

"Yeah, but why pick on just us?" protested Marty, as tears came to his eyes. "He sure doesn't even like loud rock music! I mean, what have I ever done to him? It's quite like he has a... I swear, he seems to have some sort of a personal vendetta against us!"

"Well, kids, I simply wish I knew what to tell you," replied Calvin Sr, softly. He couldn't exactly deny that Mr. Strickland did, in fact, appear to just harbour a particular dislike for the McFlys. "After we're done eating, how would you like to go to Hill Valley Park?"

"I think that'd be very awesome," Marty replied, smiling. "It feels so good that summer is practically here. We have one more year of high school to get through. After that, I guess we have college to consider. One thing is certain. I simply hope for Jennifer and I to attend the same college. I know we'll be spending the rest of our lives together!"

"You are so lucky, Marty!" Calvin Jr replied, with a wistful sigh. "I'm sure not having as much luck with finding a girlfriend. I simply do have yet to find a girl that I can... really connect with. Sometimes, I really do envy the relationship that you and Jenn have."

"Well, son, you sure are still young," pointed out Calvin Sr, as he patted his son's arm. He started to feel bad for Jennifer, knowing how much she loved Marty. After all, how would she react to the truth of what became... or will become... of her boyfriend?

"Yeah, I know I'm only nearly seventeen," Calvin Jr replied, sighing. "Still, there is just something that seems... real unfair... about it. Granted, I realize that Doc didn't meet Julia - until he was around forty. Still, I can't help but feel as if... I'm just very worried that I might still be a bachelor, by the time you and Jennifer end up tying the knot."

"Oh, Cal, you really do worry too much," chided Marty, as he gave his friend a gentle shove. "Just lighten up, buddy, okay? There are plenty of fish in the sea, y'know. It'll just be... Most don't even meet their loved ones, until after graduating high school."

"I really think your friend is right, son," agreed Calvin Sr, as he managed a small smile. Inwardly, though, he felt more than a little melancholic. His younger self quite seemed to be hopeful about his future, blissfully unaware of what his ultimate fate would be.

Calvin Sr looked up, just as he saw the waitress heading their way. The food did smell quite delicious. He then resolved that he would really make the most of today. Even if Dr. Emmett Brown was simply fated to invent a time machine, as Martin Seamus McFly was fated to become Calvin Martin Klein, it was still best to live life one day at a time.

"Here is your food, guys," commented the waitress, smiling. "I got you your large pan pizza, with double cheese on it. Also, I do have your two family orders of bread sticks - and three Diet Pepsis. Well, I do hope you and the twins have a real splendid day!"

"Yeah, thank you," replied Calvin Sr, as the waitress turned to leave. He supposed he should've been used to such remarks like "you and the twins" by now. Still, he couldn't help but feel rather uneasy. "All right, boys, let's all go dig in - shall we? Bon appetit!"

"Sure, Dad," replied Calvin Jr, as he picked up his slice of pizza. "Man, this sure is such good stuff. I really think we should plan for this, again - for when it gets quite close to our eighteenth birthday. Sure, some of our peers might think that's pretty lame - but I don't care what they think! Well, our friends do tell us that you're a cool older adult."

"Yeah, that's real awesome," replied Calvin Sr, somewhat nervously. Of course, in the old timeline, his son's friends were his friends. "Of course, some of my peers sure give me a hard time - because I don't act like... the way most middle-aged adults act."

George and Lorraine McFly have, of course, become rather accustomed to his affinity towards the current pop culture. In fact, some of it have even just seemed to rub off on them. However, some of their former classmates acted as if it was quite pathetic.

It actually seemed odd to think of how, even after nearly thirty years, his parents still regarded him as an old high school friend. He sighed, as he really began to worry how he would explain to his parents what happened to their son. Just how well would they be able to take it? How would Lorraine take to knowing that she hit on her own son?

"Well, Dad, I wouldn't worry about what they think," replied Calvin Jr. "If anything, it sure might just be jealousy. They might simply be feeling a little jealous that they lost any spark of the youthful spirit. Of course, Doc is even older - and he really can..."

Calvin Sr smiled, as he really could guess what his son was about to say. Even though Doc was in his mid-sixties, he could be very energetic and enthusiastic. He didn't quite act like a man in his retirement years. He and Doc certainly did have a lot in common.

He began to wonder just what could happen, when the fateful moment finally arrived. Would introducing his younger self to the pop culture of the 1950s make the transition be rather smoother, or would all his efforts be quite fruitless? What would his younger self remember, upon landing in 1955? For that matter, what would he remember?

Would his younger self disappear into the vortex of the space-time continuum? Would he, perhaps, become his younger self - albeit thirty years older? It was just such a scary thought for him to consider. It was about as bad as anticipating Armageddon.

"Yes, indeed, Doc is quite a cool older gentleman," Calvin Sr replied, as a smile formed on his mouth. He resolved right then and there that he wouldn't fret over the future - or was it the past? Either way, it just didn't matter. "We all could just learn from him."

Calvin Sr's heart simply fluttered, as his son and his younger self flashed their identical lopsided smiles. While this simply might not have been exactly the life that he'd chosen for himself, he quite realized how much he had to be thankful for. He sure managed to make a good life for himself. He smiled, as he vowed to be optimistic about the future.