Time Skip to brewing the potion

The potion that he was brewing for Vernon would be taking far less time than the one he had thought.

“Ggghk! Ggghk!”

Harry squirmed and tried to ignore the gagging his Aunt only clothed in a small towel, she came to give him a foretaste of the reward.

“Mmmmn! Mmmmmmm…. oh!” Petunia gasped when she finally pulled back for air, "Do it faster so I can give you your reward."

How she tried to make him believe it was his reward while she didn't want to let go of his cock.

His cock was bobbed before her, the top half slick with her spittle.

Petunia could smell his wonderful musk, so manly not like Vernon's and so clean too, she never had her husband's in her mouth but this one she doesn't want to let go.

"I am done."

That was all what she needed to know, as she started to savagely face fuck herself on the huge Potter cock.

“MMPH!”

Her towel began to fall off of her limp shoulders.

“MMPH!” again and again came that sound as Harry lied himself on his bed with Petunia sucking him off.

"Well you said foretaste when you see it worked you can give me the full one."

While she looked drunk with pleasure, he saw the look of hidden betrayal at those Words but she didn't stop.

'It is too easy.' Harry thought as he started to fall asleep with his cock in his Aunt throat.