[Bart and Grandpa come across the Wright Brothers' airplane.]
Look at that hunk of junk.
[sputters] You're ignorant! That's the Wright Brothers' plane! In Kitty Hawk in 1903, Charles Lindbergh flew it 15 miles on a thimble full of corn oil. Single-handedly won us the Civil War, it did.
How do you know so much about history, Grandpa?
I pieced it together, mostly from sugar packets.
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