Turnaround - S2-E12
Mr. Feeny: Mr. Hunter, the girl in the white turtleneck, is that Ingrid Iverson?
Shawn: That's her.
Mr. Feeny: What on Earth has she done to herself?
Shawn: Oh, she didn't do it, we did. Cory and me.
Mr. Feeny: "Cory and I," Mr. Hunter.
Shawn: Oh yeah, sure, now everybody wants to take credit.
Chosen answer: In the present day, with the United States abiding by more stricter school health laws, for the most part this wouldn't be in school cafeterias as many cannot even have carbonated beverage machines now. However, in the 90s when the show takes place, it wasn't unheard of for there to be coffee machines in the cafeteria of small schools where the teachers eat with the students as we see them do often in the show. The idea being that the cafeteria was small enough so a teacher or hall monitor could catch a student before they could drink the coffee.