Papyrus: I hate you, Frisk.
Frisk: This is why Mettaton doesn't fucking love you.
Sans: Kid, I will kill you.
Papyrus: (Remembers something) That's why you don't have a lover, you lonely giraffe!
Listen up, you dumb-dumb! Basically, Papyrus and Frisk are throwin' insults. Frisk hits Papyrus with a burn about Mettaton not lovin' him, then Sans chimes in all tough, threatening Frisk. But Papyrus fires back with a zinger about Frisk bein' a lonely giraffe, which means that you are tall and necky!