"Gaster Bullshit" is when a game has major fourth wall breaks, ARG links, hidden mysteries, or anything other elements that could be compared to W.D. Gaster. Also used for any sketchy shit going on in Deltarune that probably connects to him.
"I heard oneshot had a bunch of gaster bullshit so i had to give it a try"
"WHAT DO YOU MEAN THE KNIGHT HAS HOLES IN ITS HANDS??? THIS IS GASTER BULLSHIT BRO"
"WHAT DO YOU MEAN THE KNIGHT HAS HOLES IN ITS HANDS??? THIS IS GASTER BULLSHIT BRO"
by ElliottLava January 10, 2026
Get the Gaster Bullshit mug.The Gaster Effect (Undertale term) is when a person mistakenly links anything slightly mysterious, or anything slightly resembling Gaster (leitmotifs, font or face) relating to Undertale or Deltarune, to the character W.D. Gaster, even if it is very hard. This is usually because Gaster is very mysterious and of a certain significance to said games' lore. In most cases, relating things to Gaster is not appropriate for the situation and/or possibly misleading.
A: Woah that new Deltarune song has Gaster's Theme playing at 0:44! If you listen to the piano...
B: Those are just arpeggios. You've got the Gaster Effect
B: Those are just arpeggios. You've got the Gaster Effect
by Stratollera April 15, 2024
Get the Gaster Effect mug.by Bigbobkey July 2, 2021
Get the W.D Gaster mug.