Serpensortia

The two females crept softly and quietly into Harry's dorm room one night. He never knew how they got there, or even their names. He never thought to ask.

"Harry," one hissed in his ear, flicking her tongue out at the boy's sensitive earlobe as the other licked his neck. Harry's eyes flew open as he realized that someone else was there.

"Haaaaarry..." the Boy who Lived felt one smooth, warm body gliding down his bare chest, grazing each nipple lightly with her tongue, finally reaching her destination at his cock.The other nipped gently at his ear, tracing down his neck, stopping to nibble on his shoulder before slithering her tongue down his arm and licking and nibbling on his fingers.

Harry let out a gasp as he felt flesh wrapping around his cock, tightly, and a tongue flicking lightly, tormentingly at the head. "Oh gods," he heard himself hiss, almost as if he was hearing someone else entirely, he felt so out of his own body as he thrust his head back into his pillow, his prick being pumped and tongued so nicely that he was afraid he might cry.

Struggling not to let out a yell, the young boy came violently to his climax.

"Goodnight, Harry Potter," the first voice whispered in his ear. And the two females crept out as quietly and smoothly as they had come.

At the next Hogsmeade visit, Harry went to Famula's Fantastic Familiars and procured a pair of elegant white snakes.