Papyrus: Indeed it was! SANS! (Sans comes over)
Sans: What's up?
Papyrus: Don't we have some of that amazing candy somewhere?
Sans: Oh yeah, I stashed it around here somewhere... let me go get it. (He walks off)
Papyrus: Well, uh... there's not much you can do, I'm afraid. Just wait and hope for the best, but it seems to be out of your hands. (His face brightens) In the meantime, won't you try some of this excellent punch? (Holds a cup out to him)
Nah. Maybe Dri should kinda "know" that they're skeletons since he's one too, and someone else could be like 😱
Short: Between you, me and the fruit punch, we're actual skeletons like you. He's referring to his outfit. He hasn't taken that thing off in years.
Papyrus: Sans, I feel... underdressed. It is a Halloween party, but my costume isn't in prime condition...
This is probably where someone makes a remark about the bones looking "so real! Almost like I could put my hand through it!"