"Oh, no no. Mr. Coolbone is the marowak who lives with me," Papyrus protests through fruitless waving. He's not very sincere or emphatic about the protest; coolbones wouldn't be a bad last name. Better than Sans' adhoc 'the skeleton', which is so obvious as to not need mentioning.

With the pass where their hands suddenly collide, the skeleton startles with a brief rattle of bones. "Whoa! Is it... on a timer?"