Papyrus: WOWIE! IT'S BEEN SO LONG SINCE WE CAME OUT OF THE UNDERGROUND! WE'VE HAD A LOT OF GOOD TIMES SINCE THEN!

Sans: this better not be a flashback episode-

Toriel: Did someone say flashback? I love a good flashback. Flashbacks are lovely things, aren't they?

Sans: tori, you do know what a flashback is, right?

Toriel: I haven't the slightest idea.

Papyrus: WELL, WE MUST SHOW HER, SANS!

Sans: no. no. no. no. no. no-

Papyrus: I STILL REMEMBER WHEN THE HUMANS SAW METTATON'S FIRST LIVE SHOW!

Flowey: Don't do this-

About a year ago...

"Is... Is that a robot?"
"Dunno, but it's sexy!"
"Umm, fetish much?"
"I do not have a robot fetish! It looks like a human, you can't say-"
"Robot fetish! Robot fetish!"

"SANS, WHAT IS A FETISH?"
"i... i'm not saying anything."
"WHY? IS IT ONE OF THE BAD WORDS?"
"frisk, you really need reset this timeline."
"SANS, WHAT DO YOU MEAN?"
Frisk reset the timeline, back to the beginning of the premiere.

Present day...

Papyrus: I DO NOT REMEMBER THAT EVER HAPPENING. WHY DID WE FLASH BACK TO THIS?

Sans: (crap)

Papyrus: SANS?

Sans: let's just forget this ever happened.

Papyrus: OK, SANS. I RESPECT YOUR OPINION ON THIS SITUATION. BUT I DO NOT UNDERSTAND.

Flowey: That's it, humans. Get out.