When you eat way too much at Taco Bell, to the point of feeling guilty. Subsequently, you immediately start reflecting on how poor your diet is, and how you're going to make better life choices and be healthy next time. Gyms, salads, and lots of water are in your near future. But you're a realist, and you know you'll be back in the Bell's greasy arms before too long.
Shit, I just had 2 chicken chalupas, 3 Doritos tacos, and 4 cheesy gordita crunches! I'm experiencing a little Taco Dwell over here...