ZOZO-023 - Co-educational health and physical education 2020, 4th period: About the mechanism of male genitalia

``There are two types of erections: central erections and reflex erections.'' ``Let's remember oral sex! It won't hurt!'' A health and physical education class is held at a coeducational school to learn the correct knowledge of sex. The theme of the 4th period was ``About the mechanism of male genitalia,'' so the female students stared at the penis of a male student who was lying on his back. A female student licks the glans as instructed, saying, ``The blood vessels are sticking out on my penis...I guess the blood flow is improving...'' "That's right. Please lick me gently. If you don't learn properly from here, you'll be the ones who are missing out." "Some kind of juice came out from the tip of the glans..." "It's Cowper's liquid. It's okay. By licking it up like that, you'll show affection. You'll get used to it. It's a technique. Now, I'll show you how to masturbate, so show me your pussy," and another girl starts masturbating right in front of the guy being given a blowjob, and he can't help but ejaculate. ``Shall we stimulate the vagina next time? That way you can understand the penis better, right?'' he said, inserting a young big penis into the female student! ``Do you know how different the feeling is between missionary position and doggy style? It changes a lot depending on the angle and the position of your uterus.'' A female student shakes her hips in cowgirl position. ``It seems like you're starting to get the hang of it. When your husband is tired, please put him in the cowgirl position.'' Even in this short time, it seems like he's learned a lot about penises (lol). Congratulations on graduating as a virgin!