"SANS, YOU MUST INVESTIGATE THIS DIMENSIONAL HOLE THING WITH ME ASAP! AND BY ASAP, I MEAN RIGHT NOW!"

"dimensionawhat?"

Papyrus let out a groan as though this was common knowledge. Was his brother always this dense in the morning?

"YES, BROTHER, IT SEEMS THE FABRIC OF SPACE HAS ONCE AGAIN TORN OPEN TO REVEAL ANOTHER WORLD. AS IT IS PRONE TO DO NOWADAYS WITH DISTURBING FREQUENCY. AS I SAID, WE SHOULD INVESTIGATE IT TO FIND THAT NO TROUBLE COMES TO OUR WORLD!"

"...you're strong, you go do it. jus' call the kid...i'unno..."

"SANS, YOU'RE...YOU...GAH, FORGET IT! I WILL CALL FRISK THEN, YOU LOVABLE LAZYBONES!"

Papyrus huffily spun around on his heels and walked down the stairs, calling up his best pal.

"...AH, FRISK! YOU MUST COME OVER TO MY HUMBLE ABODE THIS ONCE!"

"...hole?"

"WOWIE, YOU'RE SUCH A SMART HUMAN! INDEED, I AM INVITING YOU TO GO ON ANOTHER DATE WITH THE GREAT PAPYRUS ACROSS SPACE AND TIME! NYEH HEH HEH HEH HEH! THE DATE THING WAS A CLEVER JAPE YOU SEE, BUT IF YOU REALLY WANT TO THEN BE SURE TO PACK A GIFT!"

Papyrus heard Frisk giggle on the other end, and he could swear he heard Toriel and Asriel ask what was happening.

"...ok. I'll go."

"SWEET, SEE YOU IN WHATEVER TIME IT TAKES FOR YOU TO GET HERE!"

Cackling, Papyrus hung up the phone and grabbed his cape off the coat rack. Quickly changing out of his pajamas and into his 'battle body', the skeleton took a moment to pose in front of the mirror a couple of times before running back into his room. Sitting down on his car bed, Papyrus dreamily sighed as he looked at the ceiling fan.

"OH SKELETON GOD, IF FRISK AND I ARE TO MEET ALIENS FROM ANOTHER WORLD I WISH TO BE ALL THEIR FRIENDS. YEAH, THAT REALLY WOULD BE NEATO, NYEH HEH!"

He continued dreaming for a few minutes until his doorbell rang multiple times. Jumping off his bed in an impressive combat roll, Papyrus jumped onto the handrail and attempted to ride it down until he lost balance, tumbling down the stairs screaming.

"N-NYARGH! O-OK, OK PAPYRUS, NO ONE SAW THAT!"

*The sound of a muffled trumpet can be heard.

"SANS!"

The door opened with no warning, and at it stood Frisk Dreemur. A small girl at the age of nine, her frail and tiny frame hid unparalleled agility, determination and a very kind heart.

"Hi, Pappy. We ready?"

"THE GREAT PAPYRUS IS ALWAYS READY! LET ME LEAD IN CASE BAD ALIENS POP OUT, OK?"

Papyrus walked up to his friend and grasped her hand in his, grip tender yet secure. Frisk nodded, and the familiar feeling of burning determination could be felt radiating out of her body.

"Let's do this."

"IT LOOKS MUCH...IMPRESSIVE, UP CLOSE."

Papyrus raised an eyebrow as he stared at the portal, glowing a brilliant blue and orange. It reminded him of Sans, oddly enough.

"WELL, NO ALIENS ARE POPPING OUT. MAYBE...THE PORTAL WANTS TO BE OUR FRIEND?"

Frisk stared at it for a brief second before nodding.

"Spaghetti?"

"SPAGHETTI."

Papyrus nonchalantly dumped a plate of spaghetti stored away in his cape pocket onto the portal, which ate it up. The spaghetti was absorbed into the darkness of the portal's depths.

"WOWIE, IT SURE IS A HUNGRY PORTAL! I BETTER GET COOKING REAL...FRISK?"

Papyrus looked down to find his gloved hand empty, and gasped as he saw Frisk approaching the portal, hand outstretched to touch it.

"FRISK, NO!"

Too late. As soon as the small girl's hand touched the portal, it sucked her entire arm in. Screaming, Frisk disappeared into the murky blackness as well.

"NO, NO NO NO NO! HOLD ON, T-THE GREAT PAPYRUS IS COMING!"

Taking in a deep breath, Papyrus buried his fear as he jumped in. The portal rippled from the movement, and as soon as there was no one left the portal disappeared.

"hey, i heard screaming, is everything...pap? frisk? are you guys here?"

Sans warped in, looking around. The portal, and more importantly his brother and buddy, were nowhere to be seen.

"hey, what the hell happened? is this a joke? 'cuz it ain't funny, guys. c-come on, come out! where the f- what?"

Bending down, the chubby skeleton found two notes on the ground addressed to Frisk and Papyrus. That wasn't the most important piece of the letter, however.

The true message was the strange wax emblem sealed onto the letter, consisting of a ball and two lines going through it diagonally and vertically.

"...whuzzis? blah blah cordially invited...smash brothers tournament? fighting? my brother?!"

Sans looked up in shock and dread, sweat forming on his skull.

"oh shit."

A/N: Spinoff time! This story will be a three-shot, taking place right after Bonetrousle's chapter 'A Taste of Adventure' as a sort of alternate ending. There's only one other SSB crossover, what? Lemme just go ahead 'n change that shit, yo.

EDIT: Fixed a jump in logic; Papyrus is walking down the stairs, but is then in his room. sitting on the car bed. I'm tired, I'm sorry.