Since joanwilder nailed power dynamics so incredibly well, I thought I'd give you the power and magic of classic jazz.
You do something to me…
Harry flicked his wand. Nothing.
Snape raised an eyebrow. "Something wrong, Potter?"
Something that simply mystifies me…
Hunching his shoulders, Harry turned away and rubbed his wand. "No, why do you ask?" he said.
"Simply that I've been waiting what seems an inordinate amount of time." Snape stretched, an impossibly wanton display of prominent ribs, sharp hipbones, sallow skin and patches of dark, coarse hair at his groin and under his arms.
Tell me, why should it be…you have the power to hypnotise me…
Harry polished his wand desperately. Still nothing. Out of the corner of his eye, he saw Snape arch his neck for a closer look and hunched over further. "And who was the one who told me that anticipation is appreciated by true connoisseurs?" Harry snapped.
"Oh, for Merlin's – come here." Snape yanked him down on the bed, pinning him. He examined Harry's wand. "It doesn't appear to be functioning," he observed.
Let me live 'neath your spell…
Harry blushed to his toes. "Give it time."
"I'll give it something." Warm hands gripped Harry's wand. Within moments, his wand responded, rising proud from Harry's body until it was hard and red.
Do do that voodoo that you do so well…
Harry sighed and relaxed, thrusting gently. "Oh, yeah. Now turn off that damned radio and let's get down to business."