The Training of Charlotte Vale, Day Four

The lights snap on and the game changes. They bind her arms so she can't use them for balance, then slide her down onto that cock. Cowgirl with nothing to brace against. Her thighs burn and shake while every downward slide punches the lesson home. They throw questions at her the whole time. Miss a word and the answer costs her another inch, another thrust. The strain shows quick. Sweat runs between her tits. Her voice cracks. Every wobble earns a slap or a laugh from the watchers. They save the real test for her ass. First the clear plug, bigger than any toy she's taken so far, worked in slow and mean while Donna sits on her face. Donna keeps her mouth busy and her pussy hovering just out of reach. The plug stretches her open, holds her there. When they decide she's ready they pull it and Donna stays right where she is, riding her tongue while the real cock pushes into that freshly opened hole. They take their time. Every inch forced past the ring, every whimper caught between Donna's thighs. They don't let up until she breaks. The orgasm rips through her while the cock is buried to the hilt in her ass and Donna grinds down on her mouth. She shakes, loses control, loses count. They keep going until she can't form words, until all that's left is a wrecked, gasping girl learning exactly what four days of training can do.