12. She’s rewarded in multiple ways. (+1 forward)

As you feel the start of an orgasm wash through you, you plunge yourself as deep in her ass as you can. She yelps, but that quickly turns into a moan as a second orgasm crashes through Gianna. You spray the inside of her bowels with your cum. She milks you as her muscles contract with each new wave of pleasure exploding inside her.

You grunt as your climax winds down, thrusting once as deep as you can. You hear Gianna muttering something.

“Well, speak up and tell the whole class.”

“Thank you, sir.” Gianna whispers, exhausted by cumming twice in quick succession. “Thank you for not cumming in my pussy.”

You smile, another unprotected student then.

“Well that seals it.” You withdraw your cock from her ass and walk around to the other side of the desk.”

“Seals what?”

“You, Gianna Sinclair, are my anal only slut from now on. No one, and I mean no one touches your pussy. That includes you.”

She nods, not sure what to say.

“Show me you agree.”

She looks up at you eyes wide.