(Drysdale tells Granny that Homer claims she doesn't have the proper medical education)
Granny: Me? Huh, that learned doctorin' from John Hopkins?
Drysdale: You studied medicine at John Hopkins?
Jed: I can vouch for that. Granny rode a mule all the way to Timbo, Arkansas just to study with John and Elviri Hopkins.
Drysdale: John and Elviri Hopkins?
Granny: Probably the greatest husband and wife yarb doctorin' team in the history of medicine.
Jed: How long you study with them, Granny?
Granny: Well, I took the full course. Then I done what they call "post-graduate work." All in all, I was there purt near two weeks.