Why shouldn't you tell a secret in a corn field?
Because they are full of ears!
Now that was a corny joke.
And yes, it was rather a-maize-ing.
I was going to write a corny joke, but those are a bit too EAR-itating.
Why do orphans hate Geometry? Because it reminds them that their parents are poley-gone I know this is a very corny joke.