Work Text:
"Close your eyes, Severus."
The voice makes him ache.
"Let me see..."
He slowly opens up his robes, flushing hot to the tips of his ears.
"Will you—ah yes, that's it."
He rubs himself through his drawers. Slips his hand inside, hesitantly drawing himself out.
A sigh. "Yes."
Warm whispers as he strokes himself, dirty things, sweet things.
"My darling boy..."
He bites his lip, his hand moving in a frenzy until he strains up on his toes, spilling over with a shuddering sigh.
"Severus..."
He cleans himself up, eyes averted, and then turns his back on the portrait.