She hoovers it up

"I would have to lick and suck any spillages up, and swallow them, but I would never let that happen, obviously." She says with an air of haughtiness.

She bends over, her ass facing you. "Come on, just do it already. Everyone's looking at my bits!"

You're not one to turn down an invitation like that. You align the tip of your dick with her cute, slightly loose butthole and begin to push inside.

"F-fuccck." Polly is finding out that having a real cock up her backside is a little different than a rubber dong that's only half as long.

"Do you want me to stop?" You tease, knowing she can only give one answer.

"N-no, you're allowed to do what you want. Just... just get on with it."

Spurred on by her words, you do just that, going at whatever pace you fancy, regardless of what discomfort it might be causing her.

Slap slap slap slap slap

The sound of your thighs bashing into hers fills the classroom.

"How does it feel? Is it tight?" Your friend Matt can't help but ask you.

"Focus! On! Your! Work!" Mrs. Kellum raps on his desk with a fist with each word.

"How can I focus at a time like this..." He mutters to himself. Mrs. Kellum pretends not to hear.

"C-cumming!" Polly announces. "I'm cumming from anal sex!" She looks so very embarrassed.

The feel of her spasming around your dick is enough to set you off too.

"Take this!" You grunt as you unleash your fountain of cum up into her innards. You can hear it gurgling around as it travels the wrong way up into her large intestine.

There's absolutely no way she can keep that in all day, even with the help of a plug.

You pull out of Polly's pooper, and she quickly replaces her double-plug panties, filling both her holes with the gently vibrating dongs.

Poor girl. I hope I'm around when she blows. But even if I'm not, I know she'll follow the rules. Later today, that girl will be licking up that anal creampie I've just given her.

"Cumming!" Lucy squeaks. Clearly she's found the sordid display she's just witnessed rather hot, if she's brought herself to orgasm.

You see a dozen eyes starting at her with deep sexual hunger. As soon as the bell rings, that girl is getting plastered.

And perhaps, with another rule, you could make that event even more fun?