If you come back AFTER SPARING SANS - And keep fighting

Epic sans reaction - Undertale

For those who want to try it themselves!!!!!!!!!!

1#: Enter the fight until u reach the Halftime.

2#: Show sans Mercy and Spare him. ( Be sure that you didnt spare sans before )

3#: Enter the fight again until you reach the halftime.

Actually when the halftime beginns - sans will start talking about friendship and advice you to stop fighting.

4#: just atk. sans again.

Now he will definitely react like in my video. You'll see .. its not a fake

Hope you enjoyed!
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[bunnishima]

'I guess we never really WERE friends'

_That hurt-_

[rsnsm]

"We never really WERE friends."
No Sans don't say that please

[jaygonzalez]

I think that San's killing you, WAS the spare. As if giving you one last chance to do a true reset.

[wizoop]

I went back after killing sans and he said
"That expression"
"Well, I won't grace it with a description"

[ausans]

1:30 woah you look REALLY

frisk: -_-

[memoryx]

"Don't tell that to the other sans-es, ok?" And then the AUs happened

[oofmageddon]

Don’t tell that to the others sanses

Fourth wall: gone... reduced to atoms.

[isuruFO]

“don’t tell that to the other sans’es, ok?”
this is really depressing since he’s aware of you not actually being friends with him and he doesn’t want the other sans’es from other timelines to know
sad as shit lmao

[yairarios]

See that fourth wall?
That beautiful fourth wall?
*EXPLOSION*

[cklounge]

“I guess we never really WERE friends, huh?”
“Don’t tell that to the other sans-es, okay?”
Yikes, he knows that would crush his feelings

[The_Wallflower]

I love his little “did i getcha?” He genuinely seems interested in if you fell for his clever trap.

[DH-nsku]

1:52 I think a lot of people misinterpret that line. While Sans could be referring to the multiverse, I think he's referring to the fact that you'll likely Reset after you're done killing everyone and pretend that nothing happened. Sans doesn't remember the Resets, he just knows about them.

[TheNemesis]

1:15 I love how Sans isn't even trying here. He simply throws words.

[cryppi]

"Don't tell the other sans-es, okay?" Oh my goodness- that implies that pacifist sans must've really been fond of you. He wouldn't want to break the heart of the past or future him who may be in a better situation. WheW, SanS CarEs abOut uS?? AA-

[solarflare]

I love how half-assed his revisited speech is compared to the original.

[rylandmalcolm]

What's crazy about Sans is that to him every fight is for the first time.
Through the barest hints he's able to surmise that you can manipulate time.
And from your emotional reactions deduce what had happened in other time lines and even trick you.
Like imagine if you were facing a murderous child with strange powers, you had this whole speech planed but because the thing looks as though it had heard it before you can tell its expecting you to finish so you on the fly skip the speech.
All of San's tricks are him just winging it.
"Did I get ya?" He doesn't know how it works but he's figuring it out, guessing. One would have to be insanely intelligent to pull that off.

[duchessnoor]

"WOAH! You look REALLY pissed off!" I know the Genocide Route is supposed to be sad and creepy but that line makes me laugh so much!

[ceruleanb]

"don't tell the other Sanses"
i think this means that he does not in fact remember timelines exactly, not the way he is thought to at least. he doesn't remember each and every timeline and what happened though he may have a vague feeling of what may have happened but its no more than all the others, that "de ja vu" feeling that everyone gets when you reset. i think he's just really good at reading your expressions and going by your actions as to what may have happened in a previous timeline. like he said "did i getcha?" he knew what he was gonna do when he decided to "spare" you, and he knew that he would tell you not to come back so he sees how angry you are and just figures you got dunked on in the other timeline. when you reset he will forget all about the genocide (contrary to all the comics and animations) though he may have a vague feeling about you, like he feels that something bad may have happened in the last timeline. he does tell you not to fight his brother though after a genocide run but i think maybe he just has a feeling you did something to his brother so he feels he must tell you that. oh but dont get me wrong i actually really like the idea of him actually having memory of all the timelines like in the fan works, even if it may not really be canon. it does make for some pretty interesting stories and AUs. but i think he is simply aware that you have the ability and can just read you very well to tell what may have happened previously.

[PashaGamingYT]

"I guess we never WERE friends."

"Just... don't tell the other sanses that..."

**cries**

[TheGamerInDisguise]

“I guess we never really WERE friends.” Oof, I felt that one cut deep in my soul...