Reflection Papyrus stiffens at the hug, because what even. Gestures of affection are not even slightly what they're all about, on or off the job. If these people aren't going to listen to their fears and doubts, they could really get going. Any minute now.

Papyrus, the real Papyrus, elbows his brother in late retaliation for the pun. His smile slips a little bit at Sans' self-deprecating joke, because honestly. But Sans is watching and he doesn't want to give any more cause for worry, so he forces it back up.

"And, here you are, being useful in more than one way! Some of them are even genuinely helpful. Like giving me good advice!"