Quackprep, whether a real YouTuber or a phantom of collective imagination, represents the fan’s deepest desire: The “full” isn’t about length; it’s about totality of experience, including the bugs, the glitches, the cut content, and the eerie silence between battles.

(PDF) Ethics at Play in Undertale: Rhetoric, Identity and Deconstruction

Quackprep is frequently used in school or restricted environments to bypass filters. Undertale Yellow

“QUACKPREP,” the flyer shouted in bold, Comic Sans font. “DON’T BE A SILLY GOOSE. GET YOUR HIGH SCHOOL EQUIVALENCY BEFORE THE BARRIER BREAKS!”