Ginny reached her hand into the front of Harry's pants. Harry broke apart from Ginny with a jolt.
"Bloody hell Ginny, tell me what you want to do before you shove your hand down my pants!" exclaimed a stunned Harry.
Ginny had no words, but she was clearly disappointed.
"No, it's fine, seriously, just tell me what you want to do before you do it."
"OK, if you asked for it," Ginny said, "can I have sex with you?"
"What?!" Harry spluttered. He was completely confused at this prospect.
"Well, even though you are an inexperienced idiot, I was going to sleep with you two years ago before Ron came in and interrupted me, and I would like to finish that business today," Ginny explained impatiently.
"OK, you're the boss," Harry said as Ginny pushed him down on the bed and they got to work.
They went on for a whole half an hour, during which Harry was grabbing Ginny's hair, taking in her smell and for the most part enjoying his experience, and completely not noticing how much noise the creaking bed was making, nor did he hear the footsteps coming up the stairs that very moment.
He heard a female voice yell, "Alohamora!" as the door unlocked and Ron and Hermione burst into the room just as Harry and Ginny climaxed.
"What the bloody hell are you doing on top of my sister?!" Ron shrieked and grabbed his wand.
"CRUCIO!" screamed Ron, but Hermione grabbed his wand and redirected it at the floor. Unfortunately his Cruciatus Curse hit Arnold the Pygmy Puff and it began writhing in pain until Hermione pulled his wand away from him.
"RON, WHAT THE FUCK DID YOU JUST DO!" Ginny yelled. "YOU JUST CRUCIATED ARNOLD! WE SHOULD TURN YOU IN TO THE MINISTRY FOR USING THE CRUCIATUS CURSE!"
"AND WHAT THE FUCK WERE YOU DOING, WERE YOU GUYS HAVING SEX?"
"IT's NONE OF YOUR BUSINESS, AND BESIDES, WHY IS YOUR SHIRT UNBUTTONED AND HERMIONE's LOPSIDED!"
Ron realized his mistake at once and started buttoning his shirt while Hermione tried frantically to nonchalantly fix hers.
"Sorry, Ginny…um…I'll just get out now."
"Yes, go, you filthy hypocrite. We'll make you feel what it's like to be walked in on," Ginny promised.
Ron and Hermione quickly walked down the hall and entered Ron's room as quietly as possible.
"Well, do we continue?" said Ginny.
"By all means, of course!"