Ghost joke

A visiting professor at the University of Alabama is giving a seminar on the supernatural.

To get a feel for 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 of you who believe in ghosts, do any of you think you've ever seen a ghost?"

About 40 students raise their hands.

"That's really good. I'm glad you take this seriously. 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 you 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, takes a step back, and says, "Son, all the years I've been giving this lecture, no one has ever claimed to have slept with a ghost. You've got to come up here and tell us about your experience."

The student replies with a nod and begins to make his way up to the podium.

The professor says, "Well, tell us what it's like to have sex with a Ghost."

The student replies, "Ghosts!? I thought you said 'Goats.' :-)