Ah, it is so funny how a story just hits you in the face and makes you wanna write it! Props for this story are at the bottom :D

Disclaimer: I do not own Jason or Piper. Mark is mine though!

You've Got Quite a Long Name, Sir!

*~Feat. Mark 'Sora' Grace~*

"You wanna walk or ride?" Jason asked his four-year-old son, Mark.

Mark started walking into Wal-Mart, not even paying attention to his Dad. He was busy flipping through a little picture book with a few Roman legends in it. Jason shrugged and followed Mark into Wal-Mart with the cart.

Piper had sent the boys out on a grocery-shopping trip. She was currently at Camp Half-Blood solving some Cabin Ten counselor issues. Jason didn't know how it got so serious that Piper—who hadn't even been a camper for years now—had to be called specifically to come calm the entire cabin down. All he knew was that he couldn't really help her and that they needed milk, so Piper told him to take Mark and go shopping.

Jason walked slowly, making sure Mark could keep up as they made their way to the Dairy section. Mark was still intensely staring at his picture book. Jason watched as his little face scrunched up in concentration, his blue eyes crossing as his dyslexia prevented him from completely understanding whatever words were under the pictures.

Jason stopped the cart and walked over to the milk section. He opened the door to the freezer and stuck his head in. Which type of milk, again? Skim? Ew.

A couple minutes later, the son of Jupiter came up with a half-gallon of almond milk for Piper and a full gallon of 2% for him and Mark.

Next on the list, he thought, moving away from the Dairy aisle. He stared intensely at the list in his hand. Eggs.

So, Jason went through Wal-Mart, picking items off the list one-by-one and throwing them into the cart. Of course, as he did this, he had forgotten one very important item back in the Dairy section.

Mark!

Poor Mark looked up from his picture book. Where was his daddy? He glanced around, trying to locate the big man with blond hair pushing a cart.

"Daddy?" he called. He spun in a circle. "Daddy!?"

The adults in the area ignored him as he paced the aisle. Mark was beginning to panic. He couldn't find his daddy, and his mommy was at camp! What's a poor legacy to do!?

He ran out of the aisle as fast as his short little legs could carry him.

"Daddy!" His cries echoed down the main aisle. "Daddy!"

A lady dressed in blue came out from around the corner. She gazed at the legacy with worried eyes. She bent down and held Mark by the shoulders firmly. "Hey there little guy," she cooed. "What's wrong?"

Mark sniffled, clutching his little picture book to his chest. "I…I can't find..." he sniffled again. "I can't find…my daddy!"

He started crying. Tears poured down his cheeks at light speed. The lady smiled sadly and held out her hand.

"Why don't you come with me," she offered. "And we'll call your daddy over the intercom?"

Mark stared at her. "I'm not supposed to talk to strangers," he realized.

She smiled sweetly. "My name is Danielle," she told him. "I work here. When a kid loses their parents in the store, it's policy that we take them to the front desk and call their parents over the speakers. The parents will then know where to find you!"

Mark pondered this. It didn't seem like a bad idea. He had no other way to get to his daddy otherwise, so this seemed the best option.

"'Kay," he said.

Danielle took Mark's hand and led him to the front of the store. "What's your dad's name?"

"Jason."

"Okay. Jason what?"

"Huh?"

"What's your last name?"

"Grace."

Danielle smiled. "Alright." She walked past the service desk and let him sit next to her. "What's your full name, big guy? We gotta let Jason know you're up here."

Jason finally noticed something was wrong when he was picking some apple juice off the shelf. He turned toward Mark and asked, "Mark, which apple juice do you like, again? Tree Top or—"

But Mark wasn't behind him. Jason turned in a circle.

"Styx," he swore. "Mark! Mark, where are you!?"

Oh, Piper was going to kill him!

He abandoned the cart and ran down the aisles, frantically scanning for his little four-year-old.

Jason hoped against all hope that there wasn't a monster nearby. Gods knew that sometimes the monsters thought they could take the son of Jupiter on their own, even though he was a lot older and a lot stronger than their usual meal. If they sniffed out Mark, a legacy of Jupiter…Jason would lose his mind thinking what might happen when Piper found out!

"Mark Grace!" he shouted. "Mark, come out right now!"

The Wal-Mart intercom buzzed overhead.

"BZZT—Attention shoppers. Would father Jason Grace please come up to the service center? There is a Mark Super Laser Sora Spongebob Hercules Grace here for pick-up. I repeat: Jason Grace, please come to the service desk to pick up your son, Mark Super Laser Sora Spongebob Hercules Grace. Thank you."

Jason blinked. What was the name of his son, now? He ran full speed—almost actually flying—up to the service desk.

"Hi, I'm Jason Grace?" he told the desk lady, whose name tag read Danielle. "You said my son was here?"

She nodded and smiled. "He's right here."

Mark was sitting behind her in a chair, kicking his feet back and forth in the air. A little yellow balloon was tied around his wrist. He looked up at Jason with big blue eyes.

"Daddy!" he yelled. Mark immediately jumped off the chair and waddled over to hug Jason. Jason smiled and hugged his son back.

"Don't you ever run off like that again, Mark," he scolded lightly. "You had me worried sick."

"You left me, Daddy," Mark scolded back, pouting.

"Fine, I'm sorry…"

Jason rose up and shook Danielle's hand. "Thank you for finding my son. What was that name you said over the intercom?"

Danielle giggled. "Mark Super Laser Sora Spongebob Hercules Grace? He said that was his full name and wanted me to say it over the speakers. He wouldn't let me say anything else!"

Mark just stood there, looking smug.

A/N: Thank you to Awesome as Annabeth for providing the story inspiration this time! I read that comment and I just HAD to write that story out! I lengthened Mark's name, too, because he knows everyone calls him Sora and wanted to include it in his full name.