A certain college professor was notorious for getting off the topic ofthe lecture, and on to his favorite subject: the evils of marijuana.Off he went one day into his inventory of horrors, „Used regularly,“ he explained, „pot can cause psychic disorientation, sterility, cancer and castration!““Now wait a minute, professor,“ interrupted a student. „Castration?That’s absurd!““Yes young man, it’s sadly true,“ replied the professor smugly. „Just suppose your girlfriend gets the munchies!“