I think she means she cooked something for the first time in a few days instead of just ordering in or getting take out. It seems the cooking fats - the ones who don't just stick something in the microwave or eat exclusively stuff made by other people (family sticking something into the microwave or minimum wage fast food employees) - view cooking as a big event. Probably because it's the closest thing to exercise that they get, and it's sadly the most exciting thing that's happening in their life. Their beetus and heart diseased and liver failing shortened life.