Bart has been revealed to have a number of allergies over the years, including ones to butterscotch, imitation butterscotch, glow-in-the-dark monster makeup and shrimp. You would think, then, that these allergies would be avoided as one-off jokes in later episodes. But alas, this does not seem to be the case. In the episode “The Frying Game,” Bart claims to have eaten “so much shrimp. ” In “A Milhouse Divided,” Marge tells Bart that due to him only having three cavities at the dentist (his best checkup ever), she is going to make him her specialty dish: butterscotch chicken.