The Last Supper Syndrome (from The Fat Nutrionist Blog - full article in link) Happy Mardi Gras! Also known as Fat Tuesday. Or Shrove Tuesday. Or pancakes-for-supper. It struck me as an odd coincidence that, just last night, I was talking with one of my groups about the thing I call the Last Supper Phenomenon. Here’s how it happens: Something happens that makes you feel bad about your weight. You feel fat.