[Sans watches Papyrus's slouch and hears the more subdued tone again and his preening only picks up in pace. If it's something Sans could figure out, then he should offer, right? It's pretty close to the least he can do. And hey, Papyrus probably literally can't get as annoyed or upset with him for not talking about this particular expansion of his magic earlier, right?]

I've got a couple more tricks besides the shortcuts and those invisible hands. Emotion tricks. I could try checking.