AN: EEEEK people loved this story so I'm making it a thing! It's a thing now! Thanks for all the support!
This was really boring.
Both Undyne and Sans had been commissioned to take Frisk to the park. They loved Frisk, really, and would do anything for them, but the two of them didn't mix in the slightest. Sans was lazy, no doubt about that, Undyne never gave up, and hated quitting, in a way, Sans was the bane of her existence. He went against everything she stood for.
"Okay kiddo, you got an hour, go have pun " Frisk giggled and ran off while Undyne could barely contain her anger. "Wow, I guess you could say that Frisk sure is..." In that moment all Undyne could think was this is it, this is finally it, if I hear another joke I swear to Asgore I will grab Sans and fling him in to the burning gas ball in the sky I CANT TAKE THIS ANYMORE! Well, thankful for Sans, in her mental rage she didn't notice what he said anyways. Frisk came back not five minutes later with monster kid (or Andrew as the people who knew him personally called him)
"O-oh my god! Frisk! You're friends with-with Undyne! That is legendary!" Andrew went up to Undyne and started asking for her autograph and rambling about how cool she was, Undyne was flattered, but played it off like she got this all the time (she didn't). After she gave him his autograph Frisk motioned to Sans, it was hard for Andrew to get his eyes off his hero but finally he turned his attention to Sans.
"Oh, uh, hey kid" Sans pulled out a very realistic looking toy knife, which he kept from Frisk for... Safety reasons. He pointed the knife at Andrew quite prominently. "Knife to meet you" Undyne couldn't control her rage and shouted a... Colourful string of words before storming off, Andrew's lip simply started quivering before he burst into tears and ran away, Frisk knew the knife was fake but still shot Sans a dirty look before running off to comfort the very upset monster. Sans face palmed, how could he have been so stupid?