Orgasm announcements

New Rule: Women must announce all orgasms loudly.

You look at Lucy with a satisfied smile. A just punishment for insulting your rules.

"I'M CUMMING! GGGAAAAAH!" A girl shouts. But it's not Lucy. It's Emma.

Poor Emma! You'd forgotten, she's still kneeling there at the front holding that vibrator inside her. How many times has she orgasmed already? How many times will she have to shout out that she's orgasming for the rest of the day? How does it feel to orgasm when coated in your classmates' sperm? So many delicious questions fill your mind. Your dick goes from mostly hard to rock hard.

I want to cum again. But cumming on Emma feels boring now.

And then...

"Ah fuck... cumming!" Polly, a girl who hadn't made a sound all lesson, suddenly bursts into life at the desk to the left of you, announcing her orgasm.

"What the hell?" You demand. "Are you masturbating too?"

But her hands are on the desk.

"Then that means..." You stand up and step over to her, forcing her to her feet and pulling down her skirt.

Instead of normal underwear, she has some sort of black rubber panties on, with two circles visible in the fabric at the base, one where her butthole must be, and one where her pussy must be.

"I knew it!" You declare to the class. Nobody stops you as you pull at the rubber panties, forcing them down her thighs, and exposing the truth - two thick dongs are in-built into the inside of the underwear, and until a moment ago had been occupying her two lower orifices, vibrating gently.

"Noooo..."

The shy ginger girl tries to hold her hands over her now exposed holes, rather than preventing you from removing her latex plug panties. So you're pulling them off her ankles, leaving her entirely bottomless.

You're getting the jist of the hidden rule now.

Girls have to hide something sexual, and when a boy discovers it, he gains some kind of privilege to sexually punish or use her.

"What's your punishment rule?"

Polly lets out a frustrated groan. "I have to let you fuck my ass, and then keep your cum inside me with the plug panties for the rest of the day."

With a single load of cum that might be uncomfortable but doable. But with your new cum-cannon-cock, it seems inevitable that she's going to have to let some out after a while. You bite your lip with excitement.

"And what if you fail to keep it all in?"