Undertail

under the tail. the asshole.
that's it.

so I was looking at some undertail yesterday

by TeraBite Gaming September 21, 2017

Undertaining

Not entertaining. Boring. Not interesting. mind-numbing, tiresome, And dull.

That guy Brian is sooo undertaining.

by BryGasm March 9, 2010

Undertale Multiplayer

A cool Undertale FanGame which has a Discord server where you ask for the game and get banned.

Guy: Hey, when is the Undertale Multiplayer coming out?
Mod: get banned lol

by EDolphin March 2, 2021

Underfell

Overated

Underfell is a overrated sans au

by Whybeanstastelikepepsi? February 11, 2021

Undertale last breath

it is basically the undertale sans fight but 10000 times more hell

Person 1: Hey have you finished the sans fight
Person: No, but I have finished Undertale last breath
Person 1: IMPOSSIBLE IT IS TOO HARD TO BEAT

by reaper sanesss December 27, 2020

Connor Underhill

A type of sex jelly only found in Europe and Canada that when you put it on it increases sex drive by over 80%.

Connor Underhill is a very great type of sex jelly

by LilJOnwhattt: August 24, 2005

undefale

something that is neither classed male or female

What is that thing!? Its undefale

by Sam Smith TRS March 9, 2007