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Define Undertail Meaning

Undertail
Term used in place of Undertale when the content in question is NSFW.
Toby Fox, the developer of Undertale, invented the term in order to make it easy to distinguish between SFW and NSFW Undertale content.
Most frequently used as a tag for Rule 34 of Undertale.

/r/Undertail is a subreddit for Rule 34 of Undertale.
By Ina
Undertail
Undertale NSFW tag. Usually used for porn, harsh words, blood.

"They are browsing through the undertail tag. I didn't know they liked undertale THAT much"
By Robena
Undertail
a perverted blog of undertale thats really fucked up

person 1: fucking hell undertail fucked me up
person 2: undertale in general is fucked up
By Kare
Undertail
under the tail. the asshole.
that's it.

so I was looking at some undertail yesterday
By Jesselyn
Undertail
A sexual/NSFW Not Safe For Work version of Undertale. Never look it up for the love of your innocence.

I was dared to look up Undertail the other day... It scared me so much, I couldn't sleep. Never again, bro.
By Angelia
Undertail
Another universe for the hentai-filled game: Undertale. It is under the tail which is an asshole and it's basically furry hentai.

Undertail is hot as fuck.
By Florance
Undertail
the DeviantArt tag that is used to separate NSFW and SFW art from the game/fandom UNDERTALE. The first one of these images was uploaded 4 days after undertale as a game released. I love this shitstain of a fandom I'm in

guy one: yo have you seen what the fandom has done to undertale?
guy two: yea, there's a whole other part called undertail, the art is actually pretty good.
guy one: have you...
guy two:
guy one:
By Melodie
Sand Undertail
Sand undertail is a quirky funy skeletun who liks to boogie and make jokes. He has brother named pypryus. He's is aslo quirky and funny haha. they aare skeltons. Sand is short ad wheres a bule jacket with pant. NO SOCK!!! He has blue eyesand is very powerful.

Jacksepticeye: TOP OF THE MORNING TO YA LADDIES. We'll be playing Undertale.. erm I mean Deltarune. Oh guys look its

SAND UNDERTAIL. Thanks for watching, if you liked the video PUNCH that LIKE BUTTON In the face... L I K E A B O S S. See ya on the next Happy Wheels episode.
By Mariejeanne
Undertale-Undertail
This is a difference

Undertale-Undertail
By Camel