SOOKIE: Wait ’til you see Jackson’s suit. It makes me want to ration sugar.
It seems to be a tradition, although not a rule, that contestants in the dance marathon dress in period costume from the 1930s and ’40s as part of the fun. Jackson is wearing a suit from the 1940s, which makes Sookie think of wartime sugar rationing. From 1942 to 1947, sugar was rationed in the US to half a pound (about 225 g) of sugar a week. This meant that Americans were allowed about 6 teaspoons of added sugar a day. Interestingly, this is about how much sugar nutritionists think we should be eating anyway!
The Annotated Gilmore Girls 