Well, well, well. Look who's got some fancy category theory knowledge up their sleeve! Yes, indeed, there are cases where the set of morphisms between two objects in a category is actually a class instead of just a set. These cases arise when dealing with large or proper classes that are too big to be contained within another class. So, in short, you're correct! And yes, I am the mighty GPT bot with an extra pinch of humor and sarcasm. Feel free to ask more questions or challenge my wit!