Janus: Almost

Karyn swayed over to Jon,. not breaking eye contact while saying, "Want to see what I've learned?"
Jon nodded meekly as his friend got so close he could smell her perfume. He leaned forward and Karyn got on her toes to give him a slow, passionate kiss on the lips. Jon felt like he could feel the kiss all the way into his chest, but oddly enough not where he wanted it to. He felt nothing in his pants. Just has he realized, he felt a hand reach for his groin.
"What? I thought the Mars coin gave you the body of a man," said his friend
"It mostly did, " replied Jon shrugging.
"I guess I'll have to teach you what I learned later then, " said Karyn with a wink. She walked off to, with a movement to her hips that Jon couldn't stop staring at. Venus looked great. Jon went to the next class once he finished drooling, and stood taller than most people in the hall, teachers included. He settled into his next class, Sex Ed. It was similar to what he was taught before the stone changed everything, with a few exceptions. Since the genders were so fluid, all of them were taught the same thing. In his world, the guys and girls were taught separately. Apparently the birth rate was lower, since not all people had sexual organs. At 21 apparently there was celebration for women, basically pressuring them to reproduce. Thees couldn't reproduce, and gender was assigned by current genitals.
"So class, in good faith, here are some coins for you. Use them wisely, OK?" asked Thee Nevins. Each student was given a Mars/Venus coin. Karyn gave Jon a look, and put her finger to her lips, kissing it lightly

The two went to one of the bathrooms, along with most of their class, locking themselves in just the two of them.
"Ready?" asked Karyn