Married... with Children, Season 3

Al just had a flashback telling about the mean librarian, Miss DeGroot, and how she was infamous for her stirring sugar in coffee

Steve:
Al, return the book.

Al:
But what if the monster is waiting for me?

Steve:
She is dead.

Al:
How do you know?

Steve:
Medical science, Al. No one can eat that much sugar and live!