A visiting professor at the University of Alabama is giving a seminar on the supernatural.
To gauge his audience, he asks, "How many people here believe in ghosts?" About 90 students raise their hands.
"Well, that's a good start. Out of those who believe in ghosts, do any of you think you've ever seen one?" About 40 students raise their hands.
"That's really good. Has anyone here ever talked to a ghost?" Fifteen students raise their hands.
"That's a great response. Has anyone here ever touched a ghost?" Three students raise their hands.
"That's fantastic. But let me ask one question further: Have any of you ever made love to a ghost?"
One student in the back raises his hand. The professor is astonished. He takes off his glasses, steps back, and says, "Son, in all the years I've given this lecture, no one has ever claimed that. You must come up here and tell us about your experience."
The student (a redneck, remember this is Alabama) nods and makes his way to the podium.
The professor says, "Well, tell us what it's like to have sex with a ghost."
The student replies, "Ghost!? I thought you said 'goats.'"