As Papyrus roams around the class, offering an easily accessible ear to listen to anyone's brainstorming or questions, it's simple enough to catch him. He tilts his head at the question.

"My own business...?" What a thought that is. A pretty wonderful one, if he's honest with himself. "No, not a fashion business! Tragically. I'm just starting this project... I don't have enough wares for a real shop."

That, and he'd worry what would happen to it, should the mirrors - or whatever else is responsible for drawing the Mirrorbound here - change their mind about him. Better to teach people to make their own cool fashion, so they can do it regardless of his presence! (Though, of course, what they make will surely be cooler with his inspiration around.)