"YOU WANT RIGATONI? YOU'LL GET THE MOST REGAL, ROUSING RIGATONI A HUMAN COULD EVER ASK FOR!!!" Yes, he's taking it seriously. Even in jest, Frisk's desires matter. He must be the best skelefriend they could ask for. For truth. For justice. For Frisk! "AND IF THERE'S ANYTHING ELSE YOU'D LIKE, JUST SAY THE WORD! I, THE GREAT PAPYRUS, SHALL MAKE YOUR WISH COME TRUE! LIKE A GENIE, IF GENIES WERE TALL, RUGGEDLY HANDSOME, AND SKELETAL."