TWO QUICK DISCLAIMERS:

ONE: I DO NOT OWN THE GRIM ADVENTURES OF BILLY & MANDY OR SPONGEBOB SQUAREPANTS. ALL RIGHTS BELONG TO MAXWELL ATOMS AND STEPHEN HILLENBURG RESPECTIVELY.

TWO: THIS FANFICTION IS BASED ON THE SPONGEBOB EPISODE "ROCK-A-BYE BI-VALVE." SO YES, THERE WILL BE OOC SITUATIONS. BILLY AND MANDY ARE 22 AND 20 RESPECTIVELY.

ANYWAYS, ONTO…

The Grim Adventures of Billy & Mandy: Rock-a-Bye Pinhead

It started as a regular day for Mandy. She went outside to pick up the morning paper from her mailbox. It was summertime, so that's why she grabbed it, because her parents could not even be bothered, even though they've both subscribed to Endsville Weekly. That and they were gone for the summer. Just as she was about to step back into her house, she heard a familiar voice to her left. It was Billy, sitting in her front yard… again. Mandy turned to him, as if ready to punch him.

Mandy: What are you doing on my property again, dweeb?

Billy: I see you got the paper.

Mandy: Yes… I did.

Billy: Well, I'm gonna go home.

Mandy: Whatever.

Just then, they both heard a baby cry from a distance. They both looked at each other.

Mandy: Did you say something, Billy?

Billy: That wasn't me.

Mandy: Oh…

Both: See ya later, then.

The baby cried again.

Mandy: Okay, Billy. I knew you were still a child, but this is getting ridiculous.

Billy: I'm telling you, Mandy. It wasn't me. I swear.

After saying that, Billy was able to find where the crying came from.

Billy: Hey. What's with the crying burrito on your walkway?

Mandy: What burrito? -Turns around- Billy, that's not a burrito. It's an infant. He appears to be alone with no parents to take care of him.

Billy: Well, we can't just leave him here.

Mandy: C'mon. We'll bring him in my house.

Billy and Mandy take the child into Mandy's house.

Mandy: Now, where is he gonna sleep?

Billy: What about down here with me?

Mandy: Okay. It looks like he's getting hungry.

Billy: Ooh, I got just the thing. An atomic frenzy cake.

Mandy: You idiot! He needs baby food. How about some carrots?

The baby then started to cry.

Mandy: What? You don't like carrots?

He kept crying.

Mandy: Quit whining.

Billy: Wait. I think I know the problem. -Takes the baby- Oh, yeah. That's it. One moment. -Turns around, then turns back- There. Good as new.

The baby had a new pair of diapers on. Mandy was shocked.

Mandy: How did you know?

Billy: Nergal Jr. had me babysit his kid a lot during the school year, so it kinda became a habit.

Mandy: Well, at least you know that. I can't believe I'm saying this, but since this kid has no parents, we should raise him ourselves.

Billy: That should be fun. At least until he's old enough to be on his own. (Gasp) I wanna be the mom!

Mandy: Billy, you can't be a mom. You're a boy.

Billy: Oh, yeah… If I was a mom, this would be kinda shocking… JUST CALL ME DADDY!

Three months passed, and Billy and Mandy took their kid to various places, including the park, the mall, the zoo, and even where they used to go to school when they were little. At the end of the night, they watched as their child falls to sleep in his crib.

Billy: He sure is cute when he's asleep.

Mandy: Yeah.

While the baby was sleeping, Mandy hushed Billy and directed him to the couch. As she makes her way upstairs, Billy got her attention halfway up.

Billy: Hey, Mandy?

Mandy: Yes, Billy?

Billy: I never thought being a parent could be this much fun.

Mandy: Yeah, I guess so.

Billy: Well goodnight, Mandy.

Mandy: Goodnight, Billy.