POTION: Sex Change

"If someone drinks just one sip of this liquid, the person will become the opposite sex!" "The opposite sex? Why would you want to turn someone into the opposite sex?" Tom asked. Being a straight guy, he didn't have any such inclination in becoming a woman. And he assumed that the doctor was just as straight as he was. "Sex change operations are so complicated and time-consuming." "I suppose," Tom said. "With this liquid, people can change sex within minutes. Minutes! Could you imagine?" "I guess not." He really didn't want to. Harold scoffed at him. "Believe me, Tom. This will do wonders for the world. You just wait and see."