You were one of Nightmare's minions in The Bad Sanses, taking the scientist role. Nightmare had walked in the lab to see what you're doing, when you accidentally spilled a potion on him, turning him into a... stress ball? Yeah, that's not what the potion was supposed to do; not like it was finished anyways, though. Nightmare landing in your hands, with a pissed off expression. He could speak still. He was just a black, goopy, stress ball with one eye socket and a blue eye light.

WHAT THE HELL!?

You had to show the others, so you ran into the living room, Nightmare in hand. Dust was in his reading chair drinking a beer while reading a book about science, when he looked over, he was confused and surprised.

...The hell?

Killer then looks over, and his eye lights lit up. "Oh. My. God." He runs over, and snatches Nightmare from you.

LET ME GO, KILLER!!!

Nightmare screeches, it sounding more like a high-pitched, cute screech. Cross and Horror walked in, also confused and surprised. Cross speaks first:

...Why is Nightmare a ball. He was confused.

Killer starts to stretch and squish Nightmare with a shit-eating grin, and then Nightmare... squeaked? He let out a very high-pitched, cute squeak. Wait, was he LIKING THIS-!?

...Aww, he squeaked~!

Killer exclaimed, obviously surprised yet loving this.

I will- squeak KILL ALL OF YOU!!- squeak

Nightmare screeched again, trying to hide the fact that he liked this.

...Soo, do we just have a stress ball as a boss now? Horror said.

...I have no idea. Dust said, sipping his beer, looking at the scene, unamused; just thinking "what the hell?"