W.D GASTER

☝︎✌︎💧︎❄︎☜︎☼︎ ✋︎💧︎ ❄︎☟︎☜︎ 💣︎✌︎☠︎ ⚐︎☞︎ ☟︎✌︎☠︎👎︎💧︎ ⚐︎☞︎ ❄︎☟︎☜︎ 🕆︎☠︎👎︎☜︎☼︎❄︎✌︎☹︎☜︎ 🕈︎⚐︎☼︎☹︎👎︎
You will need to translate that from Wingdings to English to find the definition

W.D GASTER WILL HOUNT YOUR GAME

by The secrets of Mystery May 10, 2022

Fasterous Gasterous Crinkle

A phrase used to describe a misunderstanding of either song lyrics or song title with the use of a voice activated smart device (e.g Google home)

I just wanted to play a song and Google told me what it was playing, I though it got it wrong, I totally fasterous gasterous crinkled that bitch

by Lil Mitch LOL November 22, 2020

Gaster Blaster

A sexual act where one person chugs an entire gallon of milk while giving oral sex. Then vomits the milk at high velocity at their partner's penis.

Girl: I'm just about ready to use my ultimate move.

Guy: Ok, do it babe.
Girl: ACTIVATE: GASTER BLASTER
*Girl proceeds to do the action of Gaster Blasting*

by VolcanoKaiser November 19, 2019

Wing Dings Gaster

A very cool person from the hit game: Real Life, however was popularized in deltarune.

Wing Dings Gaster is winging his ding! Don't disturb him!

by coolguy2069 October 18, 2025

Gaster

A mysterious figure talked about in the game UNDERTALE made by Toby Fox through entities called "Gaster Followers". Gaster Followers can only be obtained through getting certain numbers on an RNG system called "FUN value." The Gaster Followers will hint at what Gaster was and what he did. A hallway can appear in the Waterfall area if you have a FUN value of 66, but there is a 10% chance while have FUN value 66 that a mysterious door will appear. An entity is spotted when going through the door. It is highly speculated that this person might be Gaster, as when you interact with him, he plays a sped up and reversed version of Gaster's Theme

"Gaster? Who is that? I've never heard someone with that name before.."

by personusingtheurbandictionary September 6, 2025

Gaster Effect

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

by Stratollera April 15, 2024

Gasterism

When a singular explanation is being used to answer a wide range of questions for the primary reason that said explanation is enough vague, general or "above logic" to fit in almost every situation and for any purpose.

With the use of Gasterism one can "solve" a difficult problem by employing a solution that in itself still requires a deeper explanation, effectively removing their responsibility of giving real concrete answers.

Although Gasterism gets criticized for laziness, avoidance and uncreativeness, it is easily missable due to its way of presenting a cause that at first glance explains everything with no issues.

Guy 1: "Hey dude, how do birds fly?"
Guy 2: "Idk, physics"

Guy 1: "Well, how was the sun formed?"

Guy 2: "Idk, physics"
(Gasterism in action)

Guy 1: "Wait, if the fire spell is powerful enough to completely burn all those henchmen, then why did it only slightly hurt the main villain?"
Guy 2: "It's magic, don't think about it too much"
(Magic = Gasterism)

Guy 1: "Last night I heard a sound from the chicken. When I went to check, apparently one of the dishes fell out of the dishwasher for no reason!"
Guy 2: "Must've been a ghost"
Guy 1: "Yeah, there is no other explanation"
(Gasterism: Easy to use, hard to explain)

by EVK613 September 26, 2022