Corn-fed is more often a descriptor of cattle, to contrast with grass-fed beef. DannoHung is extending the "bullshit" image to "corn-fed bullshit".
The rural South is not usually associated with the idea that people want sex to have meaning, and that this is often transient when we find it, so DannoHung's ruminations on the subject must remain mysterious to us.
I'm sorry that I used a colloquialism and muddied my meaning. I thought it was a funny turn of phrase.
I've really got to find a new place to keep up with tech news.