Precautions needed

Maybe he should be cautious on this one. Not only could she do her best to ruin his pleasure, but what if she decided to bite at the worst possible moment? No, he couldn't take the risk.

He stealthily grabbed his phone and started typing.

• Even jocks and cheerleaders, and students trying to fit in their group, sincerely praise those with good grades in sex education and do the best they can during sex practice.

As soon as he pressed enter, he noticed his sister seemed suddenly more relaxed and intersted in the course. But maybe it was because Mr. Wilder and Ms. Mulligan just finnished assigning the groups and removed her clothes to reveal their supermodel's bodies.

"Ok, the first lesson will be oral sex, in which you will learn how to make your partner orgasm with your mouth and tongue." explained the female teacher "You are also allowed to use your hands and, for the girls, your boobs to gain bonus points, but you will mostly be graded on your oral skills. Now, if you allow us, we will make you a demonstration."

She instantly fell to her knees and started licking and massaging her partner's enormous dong which quickly became bigger and harder. She then took it between her boobs to give him a titfuck; amazingly, it was so long she only covered one half of it despite her enormous chest and took the other half in her throat. Josh and the other students were looking, fascinated, those beautiful and ostentatiously brilliant people fucking like animals in front of them.

As soon as Mr. Wilder finally ejaculated in his coworker's throat, he took her by her hips and had her sit on the desk, put his head between her legs and started kissing her clitoris and licking her vagina, while his hands were massaging her waist and chest. Since the view was obstructed by her colleague, Ms. Mulligan had to describe between moans everything he was doing to her cunt. It looked like Mr. Mulligan was rather good at it, judging by how he made her yell, and it didn't take long for her to orgasm in a roar.

"That's it for demonstration, regarding oral sex at least." declared Mr. Wilder most students' disappointment. "Now, practice." it considerably eleviated the mood. "You will all give a blowjob or a cunilingus to your partner, depending on his or her gender, and will be graded depending on how well you performed. Yes, Melody?"

Josh didn't notice his sister had raise her arm. She stood up and asked "What about the groups of three? Will we have to perform with both of our partners?"