Grampa vs. Sexual Inadequacy/References

References/Trivia

Trivia

When Homer leaves to 'do some serious thinking' he drives away from the house in the orange station wagon (Marge's car), but arrives at the farmhouse in his pink sedan.
When Homer and Marge are in the car, between scenes, the windscreen goes missing. It becomes noticeable when the mirror appears and disappears, and Abe's head manages to pop out when he and Homer argue over the getaway music.
In this episode, both Homer and Grampa set fire to the Simpson farm, and it burns to the ground. The later episode "E-I-E-I-(Annoyed Grunt)" creates a plot hole, as the Simpsons temporarily move to the Simpson farm.
Homer's shadow in front of the t.v. is still there even after 30 years.

Homer accidentally grabs a nutty photography book by Robert Mapplethorpe at the bookstore.
Grampa mentions Lake Flaccid which is an obvious reference to Lake Placid
Lisa references Occam's Razor, a real 14th century theory.
Milhouse's line "We're through the looking-glass here, people" is from Oliver Stone's movie JFK.
Prof. Frink transforming into a suave man with a deep voice is a reference to Jerry Lewis transforming into Buddy Love in The Nutty Professor.
Abe Simpson is mostly seen dressed as a quintessential Southern Colonel, an image most associated with Colonel Sanders, the founder of Kentucky Fried Chicken.