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

Twitter femboy Undertale

A quote originating from the steam reviews of the game "Omori" describe it as such. Thus the name Twitter femboy Undertale is a second, non official name for Omori.

Person 1: "Ayo have you played Omori? Better not have."
Person 2: "You mean Twitter femboy Undertale?"

by SuburbanSociopath November 1, 2021

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

Jerry (Undertale)

The exact opposite of an IRL Jerry

Jerry (Undertale) at 5 o'clock. If we hurry, we can ditch him!

by DatGuy584 December 27, 2016

Beef Undertale

The most British of all Brits, possessing the floofiest of hairs and the largest love for dinosaurs on this planet. Suspected to be a werewolf and despises being called a furry.

Also the mother of Hyde (the one from the ITV show).

It's Beef Undertale!

I heard Beef Undertale hates being called a furry.

by JonTron's Scissorman September 10, 2018

Sans undertale

A skeleton based character from the indie video game Undertale, developed by Toby Fox, that is apparently a meme.

“Sans undertale is highly popular amongst many Undertale fan girls”

by Kioki Isumie July 12, 2019