There was a student in an all-boy class who put his hand up in answer to the question, "How many times a year do you have sex?" The teacher ignored his waving hand. Several other guys answered with things like 'once a week', 'twice a day', 'five times a month.' That fellow was still waving his hand and making noises. Finally, the teacher said, "Yes, Amos, tell us, please do." Amos replied, "Just once." When the class finally stopped laughing, the teacher inquired as to what he was so excited about. Amos said, "Tonight's the night!"