A big, butch, masculine woman that is a hick. She looks dirty and probably smells. She would remind you of a trucker. She spits, talks like a redneck, and has bad teeth, not to mention she is very ugly. She basically looks like she belongs on a farm with all the other animals.
Student 1: "My teacher is such a farm dyke. Between her bad teeth and talking like a redneck, I couldn't understand what she said."
Student 2: "Yeah, she is a farm dyke. You can tell by the way she dresses. Those long flannel skirts that go down to the ground are so gay!"