It makes for a remarkably small moldsmal, but that doesn't necessarily reduce its resemblance. Maybe it just looks like a particularly young and thus small moldsmal. A moldsmall, or perhaps moldsmalllll. Cute. (It'd have to be cute, to write out all those extra letters.)

For Papyrus's part, he's visibly tired and forcing a smile again, but not nearly as stiff about his movements as after that first disappearance. The smile goes a little more sincere as he complains, "so you won't be starting it, huh? What a surprise."