She gets 'rescued'

Harry and Ron had been hiding under the bed since Hermione came up the stairs. Peeking out from under the Invisibility Cloak, they had been thrilled when they caught a glimpse of Hermione undressing in the mirror, her perfect body and pale skin exposed for them to see. They had been even more excited when it became clear that Hermione was having some fun with herself - her soft groans had caused them both to fumble around with their hard cocks in the restricted space, pulling the cloak off of them and risking discovery. In reality, however, Hermione was far too occupied with what she was doing to notice the sounds of the two boys wanking under the bed, furiously beating off their erections without a hint of shame.

After a while though, Hermione's moans of pleasure were mixed with the odd shriek of pain, followed by muffled screams. Harry turned to Ron and pointed up, a look of concern on his face. Ron shrugged, but also appeared nervous. Was Hermione in danger? Should they intervene? If they did, it would be obvious what they had been doing. Seconds later came the loudest scream yet, and Harry and Ron decided they had to act. Springing up from under the bed, Harry tore back the curtains and saw the green monster violating Hermione's body. She was caught in the middle of orgasm, writhing on the bed as the tendrils of the plant filled all her holes. Her thighs and stomach were covered in the plant's sticky white secretions, which also leaked conspicuously from her pussy and mouth.

Shocked, Harry jumped back, pointed his wand and yelled "Stupefy!"