Man: "Hi there new neighbor, it sure is a mighty nice day to be moving."

Neighbor 1: "Yes, it is, and people around here seem extremely friendly"

Man: "So what is it you do for a living?"

Neighbor 1: "I am a professor at the University, I teach deductive reasoning"

Man: "Deductive reasoning, what is that?"

Neighbor 1: "Let me give you an example. I see you have a doghouse out
back.  By that I deduce that you have a dog."

Man: "That is right."

Neighbor 1: "The fact that you have a dog, leads me to deduce that you
have a family."

Man: "Right again."

Neighbor 1: "Since you have a family I deduce that you have a wife."

Man: "Correct."

Neighbor 1: "And since you have a wife I can deduce that you are heterosexual."

Man: "Yep."

Neighbor 1: "That is deductive reasoning."

Man: "Cool."

Later that same day...

Man: "Hey I was talking to that new guy who moved in next door."

Neighbor 2: "Is he a nice guy?"

Man: "Yes, and he has an interesting job."

Neighbor 2: "Oh, yeah what does he do?"

Man: "He is a professor of deductive reasoning at the University."

Neighbor 2: "Deductive reasoning, what is that?"

Man: "Let me give you an example. Do you have a dog house?"

Neighbor 2: "No."

Man: "Fag."