The whole class was straining themselves, with each student straining to raise their hand higher than everyone else. Tyra looked around, and noticed Dusty raising her hand as well. "Dusty." The class put their hands down. Many of them groaned, calling Dusty the "Teacher's Pet". "Now, class, Dusty is a 13 year old girl. A very attractive one, at that. I'll have to think of an appropriate change for this girl." Tyra sat at her desk, as the class eagerly awaited what would happen to Dusty. "I've got it." Tyra got up and poked Dusty in the chest. Dusty's bra unsnapped itself and she froze, as her small breasts began to expand to the size of oranges, to the size of melons, and finally to the size of beach balls. She almost fell over from their weight. "This, class, is a very abnormally large breast size. Normally, not even a 20 year old woman would be able to get breasts that are this... magnificent, without major surgery." Tyra stood in front of Dusty and started groping her large breasts. "Oh, yes, these are very nice... What do you think of them, Dusty?" Dusty rested her hands on top of her massive mammaries. "I... guess I like them. Kind of heavy, though."
Tyra smiled. "Well, my dear, that's because their filled to the brim with milk. Would anyone like a taste?" Several students were brave enough to go to the front of the class and take a drink from Dusty's nipples. Dusty moaned with pleasure whenever someone was drinking. Tyra stood at the front of the class, smiling with pride. "Now, class, who would like to be changed next?"