“Class, I’d like to introduce my daughter, Catherine,” Mrs. Jenkins, the Sex-Ed teacher said. “She just turned eighteen last week, so I thought it’d be a nice treat for you boys to get to use her as the ‘study material’ for today. Now, don’t worry, I’ll still be available for all the instruction and hands-on lab work you need as well.”

Bobby Fischer raised his hand and she motioned for him to ask his question.

“Mrs. Jenkins, what’s the subject for today’s class?” he asked.

“We’ll be learning about gangbangs. You boys will all get to fuck Catherine in all three of her holes in groups of three. Those waiting, keep in mind that my holes are there for your use as well. Don’t forget to have us jack you off with our hands. You can start the lab work whenever you feel ready.”

The eighteen-year-old boys stood up, unzipped their pants and eagerly took to the day’s lessons.

“Oh, and one more thing! Any young men who manage to perform double anal on Catherine or me will get one hundred extra credit points. Three hundred points if you can manage triple anal,” she said before her mouth was filled with a young, thick, hot cock.