A visiting professor at the University of West Virginia gives a seminar on the supernatural.To get a feel for his audience, he asks, "How many people here believe in ghosts?"About 40 students raise their hands."Well, that's a good start," says the professor. "How many have seen a ghost?"About 20 students raise their hands.The professor asks, "Has anyone ever touched a ghost?"Three students raise their hands."OK," says the professor. "I'm curious -- have any of you ever made love to a ghost?"One student way in the back raises his hand.The professor is astonished. He takes a step back and says, "Sir, would you be willing to come up here and tell us about your experience?"The student make his way up to the podium.The professor says, "Thank you for being so honest. Now, please, tell us what it's like to have sex with a ghost."The student replies, "Ghost?! Dang, I thought you was talkin' about 'goats.'"