Rachel's more focused than he thought.

John stares entranced at Rachel’s red-thatched pussy, amazed at the way her juices allow him to piston his fingers in and out of her snatch. So he’s taken completely by surprise when Rachel braces herself against the sink behind her and kicks his left hand away from pumping his cock.

John looks up into Rachel’s flushed face and sees her glaring back sternly. “What the hell are you doing? I didn’t drop my panties just so you can get off,” the feisty girl reminds him. “This is supposed to be about research. God, I’m not some slut who’d let a random guy finger her in the women’s bathroom just for the hell of it.”

Chastened, John leaves his erection alone and lets it point straight up at Rachel’s wet pussy. It’s not such a bad deal to be kneeling at the feet of his gorgeous “science partner” doing a close inspection of her hot little slit, John figures. Even if his cock is screaming for release, he can be patient when he needs to be.

“I’m sorry, Rachel,” John forces himself to tell her, “I’m focused now. Can you tell me more about your vagina for my report?” He moves his thumb back to rubbing her clit, figuring he can make his request a little more persuasive.

John was getting quite an education in the signs of female arousal today, he realized--the blush on Rachel’s cheeks, the nipple points clearly visible through the thin cotton of her t-shirt, the lubrication now coating his fingers--and he could now add to that list the breathlessness of Rachel’s voice as she replies, “OK, but you’ve gotta keep doing what you’re doing with those fingers.” He just nods, resuming the alternation of rubbing her clit and finger-fucking her to keep the stimulation going. “So you’ve probably noticed that my vagina has opened up, thanks to your excellent work. . . God, I’m so glad my Mom bought me ‘Our Bodies, Ourselves’ so I know about all of this stuff . . . my vagina is opening up because my labia are expanding . . . that’s what happens when I get this horny, uh, sexually stimulated.”

At this point, John decides to try to slip a third finger into his smooth pumping motions. It’s a tight fit into what he figures is Rachel’s virgin pussy, but when he does it she rewards him with a large moan. “I can’t take much more of this,” the girl mumbles to herself after a few more full thrusts.

Sensing an opening, John decides to bluff a little to break down Rachel’s hesitation. Without any warning, he jerks his hand away from Rachel completely, stopping all of the stimulation at once. “Thanks Rachel, that was really helpful,” he says, “I think that’s everything I need to know, unless you think there’s more for me to learn about your vagina?”