Leonard can't process CORN.
The Big Bang Theory Season 1, Episode 1
Corn dogs didn't come into existence
till the first half of the 20th century.
The Big Bang Theory Season 2, Episode 2
I'm still waiting on my mini CORN dogs
from two years ago.
The Big Bang Theory Season 8, Episode 2
You want my CORN?
The Big Bang Theory Season 3, Episode 14
There were days I wanted
to fill his pockets with CORN
The Big Bang Theory Season 9, Episode 14