Biology Lesson Dr Adams is holding forth to his college students on biology and anatomy. ""Miss Baker, can you tell me which part of the human body can expand by up to 10 times, and under what conditions?"" Miss Baker blushes furiously, and says, ""That is not an appropriate question to ask a lady, and I will report you to the Dean."" Dr Adams just nods and says, ""Miss Conrad, same question."" Miss Conrad stands and says, ""The pupil of the eye, under dim light."" Dr Adams nods again and says ""Correct, full marks for Miss Conrad."" Then he turns and says, ""Miss Baker, I can tell you three things. First, you have not studied. Second, you have a dirty mind. Third, you are going to suffer a grave disappointment.""