Sans: Uh... Me and Flowey... we uh... We've had some... "trust issues" in the past...

Flowey: Oh, cut the crap, Sans! Look, I did some bad things, Sans did some horrible, awful, idiotic things. So let's just stay quiet about the past and good time...

Sans: Hey! You did worse things then I did! Why are you making me  sound like the bad one?!

Flowey: Because you are, Smiley!

Sans: Okay, that's it! *Frisk runs up and holds the two very angry Monsters away from each other*

Frisk: Guys, stop! Don't hurt each other!

Sans: ... Fine. You're lucky that the kid cares 'bout you, weed. *He walks off upstairs*

Flowey: Ugh! Finally, that Smiley Trashbag is gone..

Frisk: So... Why do  you two hate each other?

Flowey: Why don't you just bud out, Frisk?!

Sans: *Comes back in* Wait! What did you just say?

Flowey: I told them to bud - Oh...

Sans: *Falls on floor laughing*

Flowey: Sans... You're a piece of sh- *Frisk covers his mouth* 

Frisk: Uh, Flowey! Please watch your language! *They uncover his mouth*  

Flowey:    .   .   .   F*ck you, Frisk. 

Toriel: *Runs into the room, Flowey looks uncomfortable to see her* My mothering senses are going crazy! Who just hurt my poor baby's ears?! *Everyone points at Flowey* What did you say to my child?

Flowey: *Avoiding eye contact* I said the F-word, I am sorry, and I will not say it again...

Toriel: Good. *She leaves and Flowey is no longer uncomfortable*

Sans: (On the tromBONE, XD) Waa, waa, waaaaaaa!

Flowey: Sans! I'm gonna freaking kill you!!