What was your worst restaurant experience?

About 20 years ago, when I still lived in Indianapolis, IN, a Taco Bell was shut down temporarily, as well as all staff was fired after Human Fecal matter was found in the refried beans. Zebs BBQ was also shut down due to habitual failing Board of health policies. BTW, I don't care if Zeb spit on it, best ribs you could put in your mouth.