Woman: You like girls professor?

Prof: A question like that is like asking whether or not a cat likes catnip.

W: No way! professor is secretly a pervert? You always have a serious look on your face.

Prof: Then tell me, is there a person who looks like a pervert during the day?

Prof: He wakes up with a perverted face, brushes his teeth with a perverted face, starts work with a perverted face and hands out his business card with a perverted face, does such a person really exist?

Prof: I have a serious look on my face, so I'm secretly a pervert. You always rush to conclusions like that, that's why you say that kid is a good boy.

Woman: .....

Prof: There are things you can't see in all problems. Maybe those are the most important things.