What is a corn's favorite song?
Corn fields forever.
Don't tell secrets in corn fields.
Too many ears around.
Why was the physicist studying gravitational fields handsomer than the one studying electrical fields?
Electrical Fields may be repulsive at times, but Gravitational Fields are forever attractive.
The farmer called his prize cow a bull-dozer because she was always sound asleep in the fields.
"As has often been noted, physics is to math what lovemaking is to masturbation."

Student : "So you're saying both fields are good, but without an attempt to understand the universe, the search for deeper mathematical truth is empty?"

Professor : "I'm saying you'll spend most of undergrad doing math."