Ghost Sex

There was a seminar on "Psychic Phenomena" going on, when the speaker decided to involve the audience. He first asked, "Everyone who has ever seen a ghost, please stand up." Well, nearly the entire audience stood up. 

He then asked, "Everyone who has ever had a close encounter with a ghost, please remain standing." About 2 dozen people were still standing. 

He then asked how many people had been in the same room as a ghost and 6 people stood up. 

Finally he asked, "Anyone who has ever had SEX with a ghost, please remain standing." Everyone sat down except this one man. 

When the speaker demanded if he had REALLY had sex with a ghost, the guy replied, "Oh, I am very sorry, I thought you said GOAT."