The weekend comes and you do everything you can to focus on studying with the events from Thursday replaying constantly in your head. Its so hard to focus when all you want to do is stroke yourself silly to your thoughts of Miss Viki, but you know the rules.
Your phones vibrates with a new message from a number you dont recognize. Curious, you open it.
"Studying hard? Or hard for me? :)" it reads. "You've only seen me in the classroom setting, so I attached a few pictures to expand your fantasies of me. I want you to stroke slowly to the edge once for each picture and the fantasies that play in your mind ;). But remember rule one!"
You respond, "Yes, Miss Viki!" almost as instinct as your cock begins to grow in anticipation of the pictures she sent you.
You close your textbook, get some lube, and take your pants off in preparation to stroke for her.