SISSIES class

It’s the first class of the day, homeroom. “Alright class today I’m going to teach you about a super important topic so be sure to pay close attention.” You write it on the board for them:
Sexual
Infected
Subjects
Spreading
Infections
Exponentially
Syndrome

“Now who can tell me how SISSIES is spread?”

Most of the infected students raise their hands, but you call on an uninfected student who hasn’t raised her hand. She takes her time to answer “Sexually.”

“Very good!” you gush. “Now a harder question, what are the six types of sexual contact that can get you infected? Please limit your answer to one of the types.”

You call on Milly she answers confidently “You fucked me up the ass to infect me!” You smile remembering it and put it on the board.

You call on an uninfected boi and he seems less certain “Um blowing a sissy.” You smile at him “So smart! Yes, if you wrap you wet little mouth around a sissy cock and swallow down some of her sweet cum you’ll certainly be infected.” You giggle “I suppose you’d still be infected if you spit, but I’ve never seen anyone do that. Sissy cum is so good it’d be a shame to waste it!” You write it up on the board.

The next answer is “Vaginal sex.” Another correct answer, you’re so proud of your class! “That’s right girls! If you spread your legs for sissy cock you’re in for a treat. Sissy cocks are on average longer and thicker than male cocks and we can go all night. I can tell you from personal experience, when principal Anderson fucked me it was the best I’d ever had.” You smile reminiscing “But that’s not all, every time I orgasm as a sissy is better than any time I came as a woman. It’s fantastic, unreal, completely irresistible! Don’t just take my word for it though. Can I get a show of hands from the class? Raise your hand if your sissy orgasms are better than any you had as a boi or girl.” All of the infected students raised their hands. “Well there you have it.”

Next you call on a sissy that got infected fucking another student in the ass. She’d confessed to you before your own transformation, so you knew that she’d ace this one.

“That’s right! Some people doubt it, but fucking a sissy’s tight wet ass doesn’t just feel fucking amazing it’ll also infect you! That’s why all you bois are wearing cages too. Without them how long do you think it would take for one of your sexy sissy classmates to tempt you into her sweet ass?” One of the bois in your class blurted out “I wouldn’t fuck a sissy!” The rude outburst gave you pause for a minute, but you can turn this into a teachable moment. “Alright come on up to the front of the class Jack, we’ll do a little experiment.” He doesn’t seem quite as sure as he did a moment ago when he's standing with you at the front of the class.

You take your necklace off and pull his pants down. You unlock his chastity device and toss it on top of your desk. Then you ease his pants and boxers back up his hips and refasten them. “There you go big guy. Don’t let any of the sissies blow you though. That’s the fifth way you can get infected and for you girls out there getting eaten out by a sissy is number six.” You rest your hands on his shoulders and face the desks “Alright class we’ve taken Jack’s cage off in first period, lets see how long he lasts.” All of the infected students are looking at Jack like starving wolves. He’s going to have a great day, you give him a gentle nudge “Alright please return to your seat.” The bell rings and you watch your students file out into the hall.

You call Milly back for some extra credit.