Undertale Fangirl

An Undertale fangirl is someone who likes a character a little too much...

fangirls used to say: "Wow! That Sans guy is soo hot!"
Fangirls now: "Fuck me 'Daddy' 'till my face falls off!!"

"That Stacy girl is such an undertale fangirl."

by bettyXufsans May 1, 2020

Undertale-Undertail

This is a difference

Undertale-Undertail

by When_ January 19, 2021

Undertale-main theme

*what a nice song about 2 children dying! it fills you with detemmienation.

your non-existent friend: have listen to the Undertale-main theme
you:yes i have, it's a really nice song about 2 children dying! =)
your non-existent friend: yeah it is!

by Ushi.Gushy.farmer.boi May 21, 2021

Undertale effect

A process in which an indie project (either show or game) grows so big to the point where people start hating it due to how big it is.

“It has barely been a week and Digital Circus is already suffering from the Undertale effect!”

by Redsparrow09 October 21, 2023

An Undertale

A piece of media that is popular enough for fans to reference it constantly but not popular enough for everybody to understand it

Fred: Dude, you know nothing, do you?
Dean: You know nothing Jon Snow.
Fred: I haven't watched Game of Thrones yet. Stop referencing it. It's an Undertale

by Kawaiicorn October 12, 2016

Sans Undertale

has no Dick don't date, really funny though, don't play games with him., you will rage.

Sans Undertale fuck him he made me rage

by kobinguy December 8, 2019

I am now sans undertale

A rare occurrence of a living creature changing its eye color (only the left one) to blue or putting a blue object in front of their eye.

The meme is popular thanks to its simplicity: the "Sans" NPC in the game of "Undertale" can change one of his eyeballs to become blue.

"Ayo bruh why your eye blue???"
"I am now sans undertale"
"Haha funny joke now let's go visit the hospital bro..."

by lexent September 25, 2021