Gaster dropped his face.

now, now, dr gaster, there's no need to lose your head over this

Gaster beheaded himself in confusion, and Sans waves to something behind him, smiling like he's preparing the best joke in history

gaster is a garbage bag. sans is willing to show this to papyrus

Sans is holding a jelly bean version of Gaster and saying "Look, I found Dad!" to Papyrus. Papyrus is speechless.

Papyrus is speechless, examining the 1-inch gaster Sans is holding while saying, "Look I found Dad"

Suns found dad

gahasterf

Gaster thinking trans women are evil. (They're not.)