Miss Hoover: [shakily] Children, I won't be staying long.
I just came from the doctor, and I have lyme disease.
Principal Skinner will run the class until a substitute
arrives.
Ralph: What's lyme disease?
Pr. Skinner: I'll field that one. [goes to blackboard] Lyme disease
is spread by small parasites called `ticks'. [writes
`TICKS' on blackboard] When a diseased tick attaches
itself to you, it begins sucking your blood...
Miss Hoover: [not calmed] Oh...
Pr. Skinner: Malignant spirochetes infect your bloodstream, eventually
spreading to your spinal fluid and on into the brain.
Miss Hoover: The brain!? Oh, dear God...
Class: Wow!
-- "Lisa's Substitute"