Tease him a bit & let the fun begin

Vernon feverishly took out his boring muggle clothes, locked the bedroom door and jumped upon you. The pain is excruciating since he is huge and pretty much the polyjuice potion lasts only for an hour so you bear with it.

"Oh you want me, don't you?",as you hug Vernon as much as you can grab.

You rub your stomach over his penis and stroke his junk till he prematurely shoots out. But one thing you didn't expect that he was strong enough to hold your hands apart.

"Oh missy, don't get the wrong idea. I'm not into you, you a witch. And I want to destroy every single thing that Harry touched in our lives even if it means that I am abusing a little girl as your self."

Taken aback at what he has said you recover quickly and you tap into his desire.

"Oh really.... then what are you waiting for, muggle?"

He held your hands close to the bedpost and start to feverishly tie you up. For a fat man, he is pretty fast. You try to escape, but you got yourself into this mess. He picks up his mouldy worn underwear and puts it around your face covering your eyes and gagging you from screaming.

He pulls your leg up and you thank Hermione's flexibility for that else you would have snapped. He then thrusts his cock for what seems to be your pussy and rams it hard without any foreplay.

The pain is excruciating but slowly bit by bit, you start to experience a new feeling that you have never faced before. Multiple orgasms. He squishes your breasts hard to the point it turns red but it turns you on significantly. After raming for what seemed like 2 min, but for you an eternity, Vernon seems to be exhausted so he pulls out and removes the underwear gag on your face.

He then takes a handful of your bushy hair and **** himself onto your mouth as you gasp for air. He shot out but it seems that it wasn't much, given his obesity must have made him perform terribly. As you eyes focus back, you see that the clock almost struck 12 meaning your polyjuice potion effect is almost over. You use your innate magic to roll over the exhausted muggle and search for your wand. Your eyes start becoming blurry and you get your strength back to break free from the binds.

You also feel a boiling sensation at your crotch when...

Since the transformation back to yourself(Harry) was slow, your cock starts growing back while having an orgasm.

You then pull out the Sleeping Draught potion quickly and make Vernon drink the potion. He falls asleep giving you enough time to recover and run back to your room. You summon the recording device and you blur out Vernon and Hermione's faces before putting up on tape. You then mail the tape to Petunia with a time schedule when Vernon reaches the office.

A few moments later you turn back and you rush to the washroom as you feel nauseous. You vomit out Vernon's spunk and you start regretting that you shouldn't have tried that in the first place. You lay back in your room take the Sleeping Draught yourself to fall asleep.