| Character Information
Professor Nitwit is a clown.
When Ron Rabinowitz was talking about Lisa with Krusty he told him to watch out for Lisa Simpson, as she will "step right over a certain clown" to get a laugh. Krusty asked him which clown and mentioned Chuckles and Professor Nitwit. Ron told him that he was talking about him, saying "No you". Krusty was surprised of this answer as he misheard it as "No Yu", the Chinese clown.