The anatomy lesson for the week was the way in which the body of a handicapped person compensates for its deficiency. As an example, the professor showed a slide of a man with no legs whose arms and shoulders had consequently become hugely muscled. "Your assignment," he instructed a pretty medical student, "is to find someone who has compensated for a physical handicap and to report on it for the class."
After class the student went into the bar next door, and what should she catch sight of but a hunchback nursing a beer at the bar. Screwing up her courage, she went over and told him about her assignment. "If you don't mind my asking," she said sweetly, "is there some part of your anatomy which has compensated for your handicap?" "As a matter of fact there is," said the hunchback. "Come up to my place and I'll show you."
When they got upstairs, he dropped his pants and revealed the biggest cock she had ever seen. Kneeling down, she couldn't resist touching it, then caressing it, then rubbing it against her face. "For God's sake, don't blow it!" screamed the hunchback, jumping back. "That's how I got the hump on my back."