"Hello, pretty Mandy," Mr. Hendricks said. "You're here pretty early." "I wanted to have time to change. I expect the girls' lounge will be pretty full." "Why don't you come change in my office? It won't be crowded there," the teacher offered. "Thank you, Mr. Hendricks," Mandy accepted. "That's very nice of you." They went to the office. Mr. Hendricks locked the door. Mandy was wearing a pretty short dress, a little slip, and panty hose. "What are you going to wear under your graduation gown?" Mr. Hendricks asked, watching Mandy while she carefully took her dress off and folded it. "My slip and my panty hose," she answered. "I'll be too hot otherwise." "Mandy, do me a favor," Mr. Hendricks said. "Take off all your clothes and slip your gown on. Every graduation day for years now I'