[Some time after Papyrus drops his card off, a message is left in return. It's a ... lone sugar cookie in a baggie, though obviously hand-made, and not exactly by an expert either. And he's made a good effort at drawing a grinning skull in frosting on it.

Also, a handwritten note.]

Thank you for the card, Papyrus. I put it on the fridge with a magnet. You must have met Zangetsu! I suppose you could call him bleached, I'm not sure there's a word for it otherwise. You can call us twins if you like, it's very nearly true.

I hope you had a fun holiday yourself.
-Ichigo