After the Cratchits' Christmas feast, Bob expresses a desire to toast to Mr. Scrooge, his employer, whom he calls "'the Founder of the Feast.'" Mrs. Cratchit, on the other hand, expresses her absolute disgust at such an idea when she says,
The Founder of the Feast indeed! [...] I wish I had him here. I'd give him a piece of my mind to feast upon, and I hope he'd have a good appetite for it.
She scoffs at the idea that Mr. Scrooge is the founder of their feast, very likely because her husband works so hard and earns such a meager wage from his employer. She claims that if she had Mr. Scrooge there to yell at, she'd have quite a lot to yell. This is somewhat funny because it does seem a bit of a gender role reversal for the time. The wife would typically be thought of as the one who would behave meekly and mildly, and the husband would be more assertive, in terms of speaking up for himself. And yet, Mrs. Cratchit has quite strong opinions on the subject of Mr. Scrooge, and she is evidently unafraid to contradict her husband by expressing them, while Mr. Cratchit is somewhat more mild-mannered than she is. She continues,
It should be Christmas Day, I am sure [...] on which one drinks the health of such an odious, stingy, hard, unfeeling man as Mr. Scrooge. You know he is, Robert!
She claims that Christmas Day is the only possible day during the year on which she could be prevailed upon to spend any well-wishes on the likes of Mr. Scrooge. She says that he's a pretty terrible person, which is true, and even "The mention of his name cast a dark shadow on the party, which was not dispelled for a full five minutes." In other words, despite the family's absolute happiness and joy, even in their poverty, the only thing that could bring their mood down is the mention of Mr. Scrooge.