You can’t help but become aroused

As Marty continued to rub at your slit, your breathing came faster and shallower.

“Now, class, as you can see, our new student’s nipples are hardening, which is a common indication of arousal or cold for those that lack fur. You aren’t cold, are you?” she asked.

You shook your head as you continued to stroke Marty. “Good,” she said. “Now, there are other ways of starting this stimulation, and I highly recommend you try various things with a new partner. Marty, lie down.”

He does as bid very quickly, and the teacher looks at you. “Straddle his face,” she said. Slowly you get into position, and then she guides your head down to Marty’s bright pink and spikey cock. “Now, not all of these positions will be available to everyone; after all we have some height differences in the class.

Without being asked, Marty starts to lap at your cunt, and you moan in pleasure as his rough tongue pleases you. It only takes you a moment or two to return the favour. You lean your head down and start sucking on his cock, bobbing and using your tongue to please him.

“Now you can, and indeed will, get off with these kinds of behaviours, but that is not what we want today. We want to show you the reproductive process.” She leans down to whisper in your ear. “You smell like you are fertile right now, correct?”

You lift your head back and say, “Yes, Ma’am, but I was just fucked by my history teacher, so I suppose it’s alright.”

“Oh good,” she said, then turning to the class. “So, I’ve just learnt that our new student is in her fertile period, so Marty, you get some real practical experience.” She steps up the board as you and Marty continue to please each other. “Now, there are several different positions you can use for reproduction, but to give the class the best view, missionary will be best.”

You feel Marty smile as he guides you off of him. With lust and arousal, you lay on your back in front of everyone as Marty climbs between your legs. “Oh, and class, if you want real practical experience, please hold off, and I am sure our new student will be accommodating.”