The, not so secret, secret hogwarts glory hole

The worst kept secret Hogwarts has to offer. In the dungeons toilets the stalls have holes cut in them so that dicks can be stuck through. The stalls have been enchanted to that you know when a stall is ocupied and by what sex. And if both parties agree they can open a back door and actually see their partner while have their fun

Everyone knows of the existance, including the teachers. Everyone uses them, yes that includes the teachers too. But no one speaks of them as then it would get looked into and the fun would be over. As far as anyone outside the castle is concerned it doesn't exist.

The worst yet best kept secret at Hogwarts School of whichcraft and wizardry.

So what happens to our sexy twins in these stalls?