'Oh, christ ...'
Draco flushed with pleasure. He quickly surveyed everything around him - the seemingly endless corridor was now almost too narrow to contain his new stature, and his head was just grazing the ceiling. Potter and Weasley were stood before him, less than half his height and looking completely dwarfed by his strong, lithe body.
Taking it all in, Malfoy felt his thick cock twitch in the tight black boxers. He brought his free hand up to his pecs and gently caressed the firm muscles with his fingertips, moaning softly. He felt his cock stir again and was about to let his hand wander further, let it glide down over his defined abs to his pulsing snake - when suddenly, he saw Potter's hand reach for Weasley's wrist.
'STUPEFY!'
His resonating voice caught the Gryffindors off guard, and his freezing spell stopped them before they had a chance to escape. Harry's arms snapped to his sides and he went rigid, falling backwards onto the hard stone floor. There was a thud and a puff of air as Ron fell beside him, also as stiff as a board.
Draco chuckled and stepped forward, adjusting the semi-erect beast in his restrictive underwear, and planted his long, bony size 60 feet - well over 2ft long - either side of the constricted students.
Harry could not move his head, but from the corner of his eye he could see the powerful toes of his giant enemy crunched up, so close to his face that he could feel the warmth radiating from them. He heard the rather loud creak of the muscles and bones flexing in the large foot beside him. He followed the view up the strong ankle, over the thick calves and gorgeous, milky thighs -
He gasped. The giant blonde's huge, 21inch organ, almost fully erect, hung over his head. Beside him, Ron gasped he too saw the monolith above them.
'Like what you see?' Malfoy asked, stroking the prominent bulge with his thumb. 'How about we let you have some fun with it?'
As the stupefy spell released its grip, Harry attempted to answer.
'Hold it, Potter -' the giant cautioned, 'I can't just give you complete freedom. Two choices, that should be fair.'
Harry and Ron, feeling their necks tingle into waking, both nodded eagerly.
'Good. Your choices then - you can worship ...