I saw it and cringed, but maybe that is what the ad is designed for. It could be a parody to generate a buzz or a way to try and dispel fast food’s unhealthy image. One thought is that maybe Taco Bell is trying to win back customers by directly attacking (through humor) Subway for their similar Jared diet commercials. Overall I find the ad to be unbelievable and disingenuous. View it here and comment.