Any one of the four cafeteria's located around the University of Massachusetts/Amherst campus. Given the refined title of Dining Common to hide the gross state of the dining facility from the uninitiated. Also known as the DC.
Unless you go to Umass you have no idea what a Dining Common is.
Dude, I just ate at the DC and now I have a Peruvian parasite gnawing through my lower intestines.