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 13, 2019
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For the love of god please stop fucking posting about sans Undertale it’s giving me internal seizures

Asgores bette- why are there vegetables at my front door

Dumbass:“hy sns ooderteil s bst chrcter1!!1 *starts twerking furiously*

Me : please shut the fuck up my mind is currently trying to comprehend the stupidity of your existence alone I can’t take any more

Also asgores soundtrack is better

Oh and
Example 2:

Sans: kids make me hard

Me: I’m going to turn you into bone meal if you don’t fucking stop talking you pearly albino version of Jeffrey Dhammer
Asgore: I kill kids cause they’re fucking stupid and come here themselves
Me: ikr fkn dumbasses

Oh yeah and Sans Undertale is a fucking dumbass
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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
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OMG! IS THAT SANS UNDERTALE FROM THE HIT 2015 RPG VIDEO GAME DEVELEOPED BY TOBY "RADIATION" FOX???
guy 1: OMG! IS THAT SANS UNDERTALE FROM THE HIT 2015 RPG VIDEO GAME DEVELEOPED BY TOBY "RADIATION" FOX???
guy 2: OMG! IS THAT SANS UNDERTALE FROM THE HIT 2015 RPG VIDEO GAME DEVELEOPED BY TOBY "RADIATION" FOX???
by gayfaguwu August 29, 2023
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