Papyrus comes to a stop when she does, halfway through a step that he pulls back from.

"Huh?? I know it was bad..."

His gaze flickers around briefly, eyesockets shifting as he thinks back over the joke he'd just so pointedly made.

"...You're right, it was terrible! And the delivery made it even moreso. But the worst?!"

Has he lived a life steeped in terrible punnery, or has Chandra lived one blissedly free of it? Maybe he needs to reconsider a few things.