The idea for this one came from a couple of sources, including a few fanfictions and the episode "Grim for a Day" of Billy and Mandy. I do not own the show.

-1-

"I still don' understand why I have to go to dis stupid ting!" Grim growled as he followed the family into the Endsville Community Center. "I ain't related to ya!"

"Quit complaining, Grim," Mandy groaned. Then she whispered, "I don't want to be here either."

"So…why are we here again?" Penelope asked.

"For the 28th time, family reunion," Scott groaned.

"Oh. …So…why are we here again?"

"Ugh…"

"So…why are we—Oh look! It's Grandpa!" She pointed to a man with a large nose and a gray "pomp".

The man spotted the family of four (and Grim) and walked up to them. "Hey, son! Hey, Mandy! Hey, Grimey!"

"Hey, Harold," both Mandy and Grim said monotonously and simultaneously.

About seven seconds later, Billy gleamed. "Hey, Dad!" He hugged Harold.

"Heh heh…slow as always, eh son?" Harold chuckled.

"So, where's Ma?"

"Uh…they wouldn't let her out of the asylum for this, Billy."

"The what?"

"The…um… 'Crazy House'."

"Ohhhhhhh…that's a nice place. I wanna go there someday!"

"Any more of this and I will go there someday," Mandy muttered.

"Ditto," Grim agreed.

Mandy looked around and spotted someone. "Hmm…I didn't expect him to be here."

"Who?" Grim, Scott, and Penelope asked simultaneously.

Mandy pointed in the direction of the man. Grim nodded. "Oh, I see…" Scott and Penelope, however, were still confused.

"Who's that?" Penelope asked.

"Billy's cousin."

"Oh…what's his name?"

"Uh…heck, I dunno. The only time I've ever seen him was in a screenshot from 'Big Boogie Adventure', but apparently he stole Grim's scythe once."

"Dat rotten brat…" Grim scoffed.

Mandy turned her attention toward another man. "Speaking of Billy's cousins…" she said, pointing to him.

Grim's eye sockets widened. "I hope his dad ain't here…"

A dark demonic man came out of the restroom and stood next to the other man.

"Me and my big…"

"Hey, it's Mandy and Grim!" the dark one said excitedly.

"Uh-oh! We've been spotted!" Grim shrieked like an 8-year-old girl.

"Shut it," Mandy said calmly. She walked over to the two men. "Hello, Nergal…and Nergal."

"Hey, Mandy," Nergal Junior said, waving. "You look…lovely…"

"Don't say that again if you value your life," Mandy said with extreme coldness. She turned to the older Nergal. "Look, I know this is a family reunion, but I don't really consider you family, so beat it."

"I'm just as much a part of this family as you, you know," Nergal said, crossing his arms over his pitch-black suit. "After all…you married into it, too."

"Yeah, but I've known these guys longer…or…at least Billy and Harold," Mandy said.

"Uh-huh…and what about Grim?" Nergal smirked. "He's not a part of this family at all."

"Fine," Mandy growled. "But if I catch you doing something mischievous, I'll kick you out personally." She walked back to her family.

Nergal looked at his son and grinned evilly. "Then I guess we'll just have to not get caught…"

Junior gave his father a bottle of steak sauce. "So…what have you got planned for this stuff anyway?"

Nergal took the bottle in one of his tentacles. "What do you think? I'm…" He looked around to make sure no one was listening. "…spiking the punch," he whispered.

"With…steak sauce?"

"Well…what else would I spike it with?"

"Alcohol?"

"Yeah, but this is a kid-friendly fanfiction, Junior. Besides, some people start hallucinating when drinking too much steak sauce. How fun will that be?"

"Well, when you're right, you're right," Junior nodded.

Nergal laughed and walked over to the punch bowl. His prank was in effect, and no one was the wiser…