Some of the students had professional looks on their faces, like none of this was fazing them. The rest, however, had a mixture of lust and curiosity, and a few looked like they were trying to hide uncomfortable erections.
"And, as you can see, the female clitoris also gets erect, very similar to a male penis." The teacher says, before backing up a bit. "Sir, if you would please get on the table behind your slave, please?" The Hissa asks.
"Sure." Zajak murmurs, getting up behind Jess, still on his knees.
"The human male has only one penis, and it goes into only one hole. That is, this one." The teacher says, tapping Jess's pussy. "In some cases, however, when the male does not wish to sure children, sex is conducted through here." She says, poking Jess's asshole with the rod, and "accidentally" slipping the tip in. She quickly pulls it back out, before tapping Zajak's ballsack. "I'm sure all the males know what this is... So I'm just going to explain it for the ladies. Girls, this is a scrotum, and contains two testicles. One male testicle is... How big?" She asks, pointing at one female student.
"Two inches across, and three long, in the case of a Saurian, and an inch in width and an inch and a half in length in the case of a human." She answers after a second or two.
"Very good. Sit. Now, there is another organ, within the male's rectum, which helps in the production of semen. What is that?" She asks, pointing at a male student.
"The prostate, miss." He answers immediately.
"Very good. Now..." She puts the rod down and picks up a speculum. "Let's see it, shall we? Sir, if you would kindly bend over your slave?" She asks.
"Uhhhh... Okay...?" Zajak mutters, bending over.
"Relax your anus, please. This might feel a little strange." The teacher says, before poking the tool into his ass. He gasps loudly, and she feels his dicks throb on her butt. He groans a little as she starts using the tool to open up his ass a bit more, and then she picks up the rod.
"Now here is the male prostate." She says, poking a lump of muscle, which makes Zajak gasp and twitch again. "Goddamit. I'm going to rape this bitch silly when I get the chance..." He hisses in Jess's ear.
"Doesn't look like much, yes, but it, like the clitoris, is also incredibly sensitive, as demonstrated earlier. Now, sir, if you would kindly have sex with your slave? Just the vagina for now, please." She says, and Zajak glances back at her, before lining one of his dicks up with Jess's pussy, and slowly sliding in.
