Use Tanya
From Create Your Own Story
"Tanya, come to the front of the class, please." You say, waving her over.
The class looks confused, and so does Tanya; but she slowly walks up without any serious protest, standing to face the front of the class; she looks slightly embarrassed.
"Today's lesson will be on the breasts." Pointing to her chest, with a ruler. "Now, take off your top."
She blushes frantically, her cheeks contrasting against the rest of her ebony skin, as the rest of the class stares at her, waiting for her to strip.
"My top?"
"Of course. The class needs an example."
Lowering her arms down to her sides, she tensely lifts her top over her head, showing off the pink bra that she's wearing underneath.
"You're going to remove your bra, as well, Tanya."
"What?" Covering up her bra.
After a moment, she reaches round and unhooks her bra and, while using a quick hand-bra, slides it off, onto the floor. Tanya squirms, struggling to hide the dark areolas of her large breasts from view. Moving in behind her, you lift up her arms, revealing her small black nipples to the class.
What's next, in the lesson?