My original purpose in compiling these jokes was to help myself to tell them in the classroom. During the last several years of my teaching career (thirty-five years of high school sciencephysics, earth science, chemistry, biology), I was in the habit of using the final few minutes of each class to tell jokes and stories to my students. That time is usually wasted anyhow as students are thinking about leaving and going to their next class. After I began this practice, I found that they were actually looking forward to the jokes each day.