Chicago Dunkin' employee arrested after trooper finds 'large, thick piece of mucus' in coffee. A former Dunkin’ Donuts employee in Chicago was arrested last week after a trooper found “a large, thick piece of mucus” floating inside his cup of black coffee, Illinois State Police said. Vincent J. Sessler, a 25-year-old employee working at the Dunkin’ at the time of the incident, was arrested before 1 p.m. on Friday. He was charged with disorderly conduct, reckless conduct, and battery to a peace officer. This is so sick i get people are mad at the police but at the end of the day their still people as well. Check out the link to read the full story.